I don’t recall the main plotline, but one episode of TFG included Peter saying “OK, Lois, but when we get home I want anal-you have to clean the house exactly like I say.”
Also, one of my favorite lines from TFG has to do with the soap box racer expisode.
Son: “Dad, what would you say if I told you I didn’t want to be in the soap box race?”
Dad: “I’d say ‘come again’? Then I’d laugh because I said ‘come’.”
Aslo, in an episode of The Critic Sherman goes to a film class where they’re watching the final work of Orson Wells; he was doing commercials for some frozen food company (I forget the name, so we’ll just call it Ms. Holly’s).
“Ms. Holly’s frozen peas are delicious and full of green peaness.”
This is made even funnier by the fact that Welles actually did an ad for frozen foods a couple years before his death.
I think my vote would also be for The Family Guy for “Dirtiest Lines They Got Away With On Television” (now, THAT’S an Emmy-Award winning category!. I’ve seen most of the stuff described in his thread, and nothing gets me to actually gasp when I hear it like The Family Guy consistently does. For some reason, it seems smuttier when it comes from an animated show than a live actor show.
(And I have a theory about how they got away with all that stuff - the censors are looking for particular words, and not for how things sound, or how people are expected to misinterpret them. Also, censors could be a bunch of simpletons that really don’t know how dirty some things are. I kinda like that theory.)
“Son of the Beach” has some awesomely good double-entrendres - too bad they’re sandwiched between a lot of awfully bad double-entrendres. But what can you expect from Howard Stern Productions.
I particularly like the virgins name: B.J. Cummings.
Umm… huh? Why is that bad? Wasn’t that a song in the '80s? Ok, what does it mean?
Oops, that was me, not Joel who posted above. Not that he knows, either, I’m sure 
Sugar walls=the inside of a woman’s naughty bits.
I THINK.
Guinastasia: You think correctly!
What about the episode of South Park, when they said “shit” over & over? I don’t think any of them were censored.
Or maybe I was drunk.
The Simpsons takes on the Odyssey:
Homer (as Odysseus) delivers the wooden horse to Flanders (as King of Troy)…
Flanders: “From now on, whenever somebody gets wood, they’ll think of Trojans!”
Why did the chicken get to the other side?
He crossed the road.
In Northern Exposure, Dr Joel Fleishman had to do a check up on Hollis (sp?), you know, the old guy with the hot young babe.
Joel told him he needed a stool sample, a urine sample, and a sperm sample. then…
Hollis: “Come again?”
Joel: “No. Once should be just fine.” (said with a smirk on his face)