Having been to Jon's room before, Karyn didn't feel compelled to wait for Jon to answer her knock. She figured that he was probably on the internet or something.
Instead, she stood in the door in shock as she watched Jon and his mom going at it on the bed. Her eyes were glued to the junction of their legs, watching Jon's rather substantial manhood sawing in and out of his mom's MILF cunny.
"Holy crap Karyn, can't you knock?" asked Jon, not stopping his motion, his mom continuing to moan obliviously as he fondled her tits. Karyn jerked her eyes up at Jon's comment, and gasped. She stopped and stared at Jon with lust in her eyes. Jon looked at her with lust as well. She pulled her her clothes off in a frenzy, and climbed onto bed. Jon's mom, finally registering her presence, began to object, but was silenced when Karyn locked her mouth onto her breasts, running her hands around to findle her ass as Jon continued to pound her hard.
