Who's tricking who?

When her husband and her stepdaughter both end up away for the weekend, stepmom just can't seem to get tired... She's missing something that she desperately needs... It isn't long before she has a plan. Sauntering into the living room, chatting up her stepson, and pretending to need some background noise to help with her insomnia. She lays down on the couch, laying her head right in his lap. Her stepson takes the bait soon after, unable to help himself.... feeling up her big tits. Pulling out his hard cock... rubbing it against her face. It isn't long before stepmom has a mouth full of her stepson's big dick. When her stepson finally realizes that his stepmom knows what he's doing... and likes it... They've both gone too far to stop now. Cum in my mouth, she begs... That's what stepmom really needs.