Son can't stop rubbing his mom when they share a bed

Feeling Mommy's soft body against yours has your mind racing. The rubbing has got to stop she says now aggravated. You're not going to let me sleep, are you? Mom says. Oh my god, I can't believe I'm gonna do this. Let's just relieve you and go back to bed, okay? She moves her hand down to your cock and begins stroking it. After a couple of minutes she gets frustrated. She sits up explaining that this is the only time this will ever happen, and then begins sucking your cock. However when her tongue tricks don't work, she has one last resort that she really doesn't want to do, sex.