And people say "modern cartoons" don't get away with any adult jokes anymore, heh heh. Regular Show gets away with quite a decent number of sexual reference and such really. Muscle Man once said "a party requires guests with breasts, and mine don't count," the same episode introduced Party Pete who does a lot of pelvic thrusting at hot women, Starla has had some noticeable gainaxing in some scenes (yeah methinks some people will need brain bleach after those scenes though, given it's Starla we're talking about), and of course Margaret showing some side boob in one early episode.

"You know who gets away with any adult jokes?"