Girlfriend came back exhausted from their walk and crashed on the couch. Perfect. Pulled my stepson into the kitchen, yanked his shorts down and that huge young cock was already throbbing. Bent over the counter, guided him balls deep into my soaked MILF pussy. He fucked me hard and quiet, slamming while I bit my lip. Felt him explode, flooding me with thick stepson cum. Pulled out dripping, kissed him quick. GF still asleep, zero clue.