When Homer forgets her birthday and is forced to improvise, he buys a bowling ball with his name on it. Bart Snaps Homer In A Compromising Position In ‘Homer’s Night Out’. Coincidentally, Marge takes Bart, Lisa and Maggie to the same restaurant, but to a different part.
The adult version of Bart is an adult doppelganger of Bart Simpson.
Long before there were mainstream adult cartoons on network TV, The Simpsons was one of the first cartoon shows that parents opposed because of racy jokes.