Cuck for Mommy's Cheating Creampie

You walk in on your step-mom - pussy out and dripping with creampie. You had been listening to her get railed by a stranger for the past hour. She's been cheating on your step-dad, but you're to turned on by hearing her moan and get fucked. Upon finding her in her room, she tries to cover up but just can't stop touching herself. Mommy sees that you're turned on too so she tells you to jerk off to her creampie. You're Mummy's little cuck aren't you??