How about a great porn comics The Incredibles? Violet Parr plagued by sexual thoughts regarding her mommy, Helen Parr/Elastigirl. Once the opportunity presents itself, Helen seduces Violet and they fuck in the bathroom. Their illicit affair continues the very next day, too.
This porn comics The Fairly OddParents is nothing short of amazing. Timmy Turner gets to fuck both Wanda and his own mother. Even though this one starts off fairly tame and there’s tons of exposition to go through, it’s all worth it. Seeing Timmy fuck his mommy is unforgettable.