Once and for frickin’ all, what is the joke in The Breakfast Club???
What does she say? Please, END this void in my life!
“Pour me one anyway, I’m an aristocrat!”
“Your choice, pal. Pour me a Glenlivet or smell this salami up close!”
“Oh come on. I can’t give up more than two addictions in one sitting!”
“Forgot my pencil.”
Speaking of which, this reminds of a caller to the Allan Combs radio show who used to call in during the Radio Grafitti segment eons ago. Allan’s rules were, “One sentence. One sentence only.” Caller always asked the question “What do you call Rodney King in Spanish?” Allan would always cut him off. I just want to know the damn joke after 15 years, goddamnit.
And, if we want to get factual:
The joke that Bender tells but never finishes (while crawling through the ceiling) actually has no punchline. According to Judd Nelson, he ad-libbed the line. Originally, he was supposed to tell a joke that would end when he came back into the library and said, “Forgot my pencil”, but no one could come up with a joke for that punchline.
IIRC, it’s some variant of the “N” word. Always thought Combs had good instincts.
No soap. Radio!
“How about a boot to the head?”
No soap, radio!
edit: Damm you Indistinguishable! Foiled again!
The first two were great. This one destroys me! 
I’ve never understood that scene. Why is he talking?
-FrL-
Why is a raven like a writing desk?
I think the idea is that he’s trying to concentrate and keep his nerve by reciting something familiar.
They both produce notes, though they are very flat, and it is “nevar” put with the wrong end in front. (Actually, this joke has no answer either, but Lewis Carroll wrote the preceding when pushed for one.)
Cecil on the subject.
This one is a real joke with a real punchline - “a pinata”.
I forgot that - my Dad had to ask me what a pinata is.