You hear the bathroom lock click

SHIT! You heard the lock click open, and realized you stopped listening a long time ago. You were seconds from cumming, but you had ****. You panicked, knowing it was a matter of seconds before your fate was sealed. You jerked up, shoved your on-edge dick back into your pants, grabbed your trousers from your ankles, and tried to jam her g-string and butt plug in your pocket, all simultaneously. It went as well as expected, and you tripped, falling off the bed and onto your face, losing precious time as your legs slipped out of your pants. You knew you were out of time, so you simply grabbed your pants and tried again, still lying on the floor. You heard the door hinges stop squeaking, followed by your sister's voice as your khakis slid up your thighs.

"Why are you lying on the ground?" You quickly buttoned your pants, before standing up.

"Oh, uh..." you stared at your sister as she towelled her hair dry, looking curious. "I was just, uh..." It was even harder than usual to think of an excuse, distracted as you were by her big tits bulging out of the towel wrapped around her body. You swore they were bigger than normal. You had spent countless hours sneaking glances, so you knew those puppies like the back of your hand. At least, you knew them clothed. It had been a couple years since you had lucked out and seen her topless. "I was just... just checking to see if we left anything! Didn't want to forget anything behind when we go!"

"Ah, good idea," she agreed, as she sauntered towards her bed, her curves swaying enticingly. "We don't have much time, so we've really gotta head out soon." As she came around the bed you had slept in, you saw her foot brush against something pink out of the corner of your eye. Damn! You had to think quick.