Given its sci-fi setting, Futurama has plenty of material for smart gags, so it's a little surprising how many dirty jokes Futurama got away with during its run. Not all the dirtiest jokes on Futurama are explicitly sexual in nature, as creators also managed to sneak a fair amount of drug references past the censors. Sometimes, they even combine the two (watch out for Bender when he's been "jacking on").
Matt Groening is no stranger to adult jokes — there are quite a few in The Simpsons — and it seems he kept those muscles flexed when crafting Futurama. While his shows aren't considered nearly as crass as Seth MacFarlane's Family Guy, that doesn't mean Groening isn't capable of capitalizing on low-hanging fruit.
Bender Cooks Up Lady Parts
In "30% Iron Chef," Fry asks Bender if he's making a wife when he spots the robot cooking something up. Bender responds, "Part of one... meantime, I'm cooking up a tasty Sunday brunch for my best friends." Which part of a wife do you suppose he's cooking up? There's not really a family-friendly answer to that question.
That Better Not Be Why They Call It Jerk Rub
Lrrr: This jerk chicken is good. I think I will have [Fry's] lower horn jerked.
Bender: It's used to it! Wooooo!
Has Fry Actually Tooted His Own Horn?
How does one toot a horn? By blowing.
Urectum Isn't Much Better Than Uranus
In the episode "In-A-Gadda-Da-Leela," Professor Farnsworth informs Fry that astronomers renamed Uranus in 2620 to kill the recurring joke. Unfortunately, they didn't think it all the way through when they decided on Urectum.