First-timer stepson tears up mommy before stepsister's arrival

I can't wait for my stepsister to arrive, so I determine to get my stepmom's help in satisfying my lust. She's a hot, mature Brazilian Mom with a assets that squeals sin. We engage in a super-steamy encounter, probing every inch of her sugary curves. When we're done, she's well-prepped to arm over the reins to my impatient stepsister.