"Sweetheart I think we need to have a little chat. This might be a bit awkward, but mommy's noticed you've been getting a lot of erections around her." Your mom explains that it's perfectly normal to have urges but that it makes her uncomfortable to see her son's cock get hard for her. "Mommy understands that her body might make you... feel things. But it's not okay to act on those feelings!" She tries to be strict with you but you know your mother has a soft spot for you. She's a pushover and finally agrees to help you you jerk off "JUST ONCE" so you have some material to fantasy about when you need to take care of those incessant erections. Mommy exclaims that you're such a big boy, and offers to suck you off - admitting her pussy is wet. You can't see mommy's pussy though! That would be too far. Eventually she agrees - but NO TOUCHING! You can't control yourself, and start to slap mommy's bare pussy with your big cock. She protests but eventually gives in; telling you you're too strong to overpower and to just cum in Mommy and get it over with. Your cock is so big Mommy can't help but enjoy herself, squirting and convulsing on your big dick. Even bigger than your father's was!