His sister.

When Adam saw what was waiting behind door number one, his eyes went as big as saucers.

His sister stood there, one hand on the door, the other at her crotch. Her fly was open, but the shlk-shlk-shlk sounds weren't coming from a pussy. Instead, she was stroking the most... magnificent... cock... he had ever seen...

Adam shock his head. He wasn't aroused by huge dicks, he wanted one for himself! But wasn't there one right in front of him, waiting for him? He just needed to reach out and touch...

He realized that his sister had used the time he had spent contemplating to come up to the bed, stroking herself all the while.

"Fuck, that was so hot. Look how hard you made me," his sister said. The smell of her precum-soaked cock was making Adam dizzy.

"C'mon, suck it. I know you want it," she coaxed him, waving her dick in a figure eight. Adam's eyes were following to the tip like he was hypnotized.

His lips parted, he leaned forward unconsciously and his sister used the opportunity. With one fluid motion, she shoved her girthy monster between his waiting lips.

The taste! The scent! Adam's senses were overwhelmed by the sensations. His eyes rolled back and he moaned lewdly, the sound muffled by his sister's giant meatstick. His hands shot up to Sarah's juicy thighs and he pulled himself forwards, intent on forcefeeding himself as much of her veiny rod as possible.

"Yeees, cocksucker, take it all!" his sister shouted, grabbing his head with both hands and shoving her dick into his throat, making him gag slightly.

It wasn't enough! He needed more! He needed... Adam startet pumping his head back and forth eagerly, sucking Sarah's cockhead at the end of each stroke, letting his tongue slide along the throbbing bottom of her member and massaging her fat balls, moaning and whimpering all the while.

Sarah meanwhile couldn't believe what an eager little cockslut her brother was all of a sudden. Or how aggressive the thing between her legs had made her. She had only been looking for an advil to relieve her throbbing headache, but had only found a weird bottle in her brother's room instead. Something-X? Sounded good, down the hatch. Her headache was gone almost immediately, only to be replaced by a throbbing ache in her pussy. Feeling dizzy, she had stumbled back to her room and laid down, losing consciousness. The next she knew was waking up with a raging boner and soft moaning from the next room over - her brother having a wet dream. She had tiptoed over, cracked the door open and seen her brother rubbing a brandnew pussy! That was to much for her, and her hand started stroking her dick almost of its own volition.

And now Adam was on his bed in front of her, desperately sucking her off, his shirt bunched up over his throbbing nipples. One of her hands went up to her breasts, kneading and rubbing it, pinching the nipple through the thin fabric of her top. Her precum was flowing freely now, dripping from her brothers chin onto the bed. His pupils had contracted to the pinpricks of an addict, and his high-pitched moaning and whimpering was driving her wild.

"Oh... my... god... where... did... you... learn... THAT?," she barked with each thrust, her balls churning, her giant tool buzzing with lust. Adam could only moan through the haze clouding his mind. His pussy was dripping on the sheets that were already drenched with his juices from his first earlier, his lower lips fluttering and twitching against the air, **** to be filled. His head kept bobbing back and forth, his hand gently tugging his sisters balls, as they suddenly contracted towards her groin.

"Oh! OH! I think I'm cumming! CUMMING!" Sarah yelled, ramming her dick down Adam's throat. The first shot went straight down into his stomach, but that was not was Adam wanted. He needed the taste! He leaned back a bit, sucking on the slab of meat stuffed in his face, and the second blast filled his mouth and throat, partly shooting out of his nose. Adam did not care. The heavenly taste was assaulting his senses, he could even smell it! Desperately, he swallowed. And swallowed. And swallowed. The fifth shot was too much for him and he leaned back, catching the sixth square across the face. Even the feeling was luxurious!

With a contented sigh, he fell back on the cum- and pussy-soaked sheets, giving his sister an inviting view of his sodden pussy.