She bypassed the basement bathroom with its shower and crept toward the hot-tub room. If one of the boys was in the hot-tub, she'd give up all ideas of a quick shower and a soak. She'd clean up in her private bathroom adjoining her bedroom and lock herself in for the night. She just didn't want to talk to anybody tonight.

She was almost to the door when she heard splashing and some muffled squeaking.

"Mark, don't!" a girlish voice squealed. "Mark…" The words were drowned out and became more muffled squeaks.

Alice moved to the door and peeked into the room.

Mark, his body naked and glistening with water, stood up in the sunken hot-tub, crushing a naked girl in his arms and kissing her violently on the mouth. She squirmed in his arms, squealing and mumbling into his open mouth, choking on his tongue. Mark rubbed against her, humping his cock at her wet belly, sliding his muscles against her tits. He stood a full head taller than she was. Her wavy blond hair dangled a little past her shoulders as he bore down on her, bending her head back and kissing her as if he wanted to shove his tongue all the way down her gullet.

Alice's first impulse was to turn and walk away as if she hadn't seen a thing. She was shocked, but what could she do? She surely wasn't going to burst into the room and embarrass the two teenagers. She would just walk away and pretend she'd never come down here. She lingered for a few moments, having a hard time tearing her eyes away. Mark lifted one of the girl's legs, reached down and maneuvered his cock into position. He fucked his prick up her pussy as easily as if he were zipping up his pants.

Alice froze where she stood.

Mark drew his mouth away from the girl's lips. She was gasping.

"Oh Mark, don't, oh God!"

Mark got his hands under her ass and lifted her up. She wrapped her legs around his hips, clinging to him with her arms around his neck. Mark bounced her up and down on his cock as if she weighed as much as a plastic doll, his big hands juggling her asscheeks.