John tests how "nice" Becca is now

Becca finished wiping my cum from her hand and wrist before turning her attention to cleaning my cock and belly with the sock.

As she wiped she would occasionally glance to my face and beam a warm, sisterly smile. But I could tell she was turned on, too. Her nipples were like diamonds and her cheeks were still flushed.

"Wow" was all I said as I relaxed and stared at the ceiling, enjoying Becca's gentle ministrations.

She sighed as she finished up. "Well it's late bro, get some sleep." And she stood, still holding Becky Sock. She considered it for a moment before asking, "want me to do anything with this?"

I knew what Becca meant, did I want her to replace it or take it or put it in the wash. But I was awake and my mind was turning.

________________________

I finished cleaning John's cum off his belly and looked at the clock, 2:31 am. I sighed "Well it's late bro, get some sleep." I rose and enjoyed his gaze as he looked me over. My chest was getting a little chilly, but that didn't account for my hard nips. I needed to go to my bed and take care of my business. I noted my shirt still where I left it and considered his, or rather _my _cock sock. It was sodden and a little crispy with dried semen. It smelled strongly of his dick and, frankly, was pretty gross. "Want me to do anything with this?"

He just lay there looking past me for a moment before he looked me in the eyes. Poor guy, he probably has had the shock of his life. I really have been awful to him, not letting him stare and play with my tits, not being his cock sock.

I waited but he didn't speak, he seemed to be thinking and his eyes settled on my chest. Wow, I just loved it when he looked at me like that. I arched my back so he could have a better look. It wouldn't be very nice to interrupt him but I did want to get back to my room and get myself off. So I gave my chest a little wiggle and cleared my throat. He blinked and looked at me.

"John" I laughed, "the sock?" It needed to be washed or better yet, thrown out. He didn't need it anyway, he had me.

He visibly swallowed and said "Rub it all over your tits" in single hurried breath.

"What?" I frowned, not sure I heard him right. Surely he didn't mean what I thought he said.

He took a breath and looked me in the eyes. "Becca, I want you to rub that cum-soaked sock all over your *gulp* funbags while I watch until I say stop."

Funbags? That was a stupid and disgustingly misogynistic term. Wait, be nice. Fun bags. If he wanted to refer to my breasts like that it must be because he thought they were fun. But... I held the sock out away from me, it hung at an odd angle, heavy with jizz. "John n-" and then I checked myself. This was probably something that would turn him on, I knew guys in porn often came on girls' tits so yeah that made sense. I quickly tried to hide my distaste for the concept. It would be mean to let him know that I thought it was gross. He would be looking at my body lewdly, which I liked and wanted, and now that I thought about it, this was exactly the sort mature adult interest I wanted to encourage in him. "Ok John," I brought the sock up to my boob an pressed it on. It was clammy, sticky, and sincerely quite gross but I hid my displeasure except for a shiver that ran down my spine.

John stared, wide-eyed as I slowly moved the sock to my other breast. God I liked it when he stared, a second shiver ran down my spine. Around my tit and up to my neck and back down to my other tit, the sticky sock left a thin sheen of a trail wherever I rubbed it. As I rubbed his dick sauce on my DDs, John's hand returned to his half-deflated cock again. The sight brought my smile back to my face and I realized that this wasn't so bad. Yes, it smelled like day-old-dick and left a clammy splooge-patina over my tits but John obviously liked it beyond his simple affinity for admiring my chest. And so I found that I could like it, too.

In fact, I did like it.

I giggled and began to more lewdly and performatively rub the sock all over my tits. I noticed that this act was now turning me on and John was evidently getting turned on, too. 'I really need to go get off' I thought as I bit my lip. I decided to finish the show and bid John a good evening, I was keeping him up after all and that might not be so nice, actually. With a flourish I ran the sock upwards between my breasts and out before giggling and giving John a little bow.

He smiled at me then, which just melted my heart. God I love my bro, I'm so happy he decided to tell me how he feels this morning, being mean was never this fun. "Ok bro, I think it's time for bed. You can enjoy my funbags any time," I winked as I continued to wipe his cumsock all over my proud and perky melons.

"Wait." He sat himself up and looked me over, hand still attached to his weiner. "Don't stop yet." I hadn't stopped of course, he had asked me to do this until he said stop and he hadn't yet. I shrugged and gripped the sock by the toe and the top, then proceeded to stretch it across my funbags, being sure to rub my rock hard nipples.

"Ok, you can stop but keep that sock handy."

I ceased my cummy carresses and let the sock hang limp in my hand. Then I stepped towards him and struck what I'd come to think of as 'Showing my Tits to John' pose (hands behind my back, shoulders back, chest thrust forward and up) as he inspected my glistening titties. When he pinched my nipple I gasped before moaning . I felt the moistness in my panties grow.

He released my nipple and leaned back, slowly tugging his dick. "Put the sock in your mouth." He commanded me. It only took me a moment to get over my initial hesitation. I did like the feel of the sock now, and the smell, so I brought it up to my face and took a whiff, my twat responded with a pulse of heat and I said "ohhhh" before opening wide and pressing the sock in. Anything for John, it was so important that I be nice to him. John was tugging furiously now on himself and the fire in my snatch intensified as I moaned around his cum filled sock. It tasted worse than it smelled but, since I simply had to be nice and liked the way it smelled I **** myself to have a change of heart.

His sperm saturated sock tasted wonderful, even better than it smelled.

"Take your shorts off." Easy. The little shorts were on the ground almost before he finished speaking. I was excited for him to potentially ogle my butt or legs too. This action, of course, revealed to John my sodden panties, as well. His eyes widened and I moaned again as his gaze lingered between my legs. "Is this turning you on?" He asked.

It would not be nice to lie. I nodded emphatically, "mmph hmmph!" My hand twitched but I couldn't possible masturbate in front of my little brother. That would be wrong? Something about that didn't sit right in my thoughts, however.

John shook his head.