A library, because there are so many stories. (Did Not Make Up this Joke)
What does Spock sing in the shower? I'll stop the world and meld with you!
One. They stick the bulb in the socket and wait for the world to revolve around them!
One's a cunning plan, the others a punning clan.
A dead cow! (My 5-year old made up this joke)
Because the censor erased the letter "s".
A pig tail!
Q: What is the tallest building in the entire world? A: The library, because it has so many stories.
Sir, this is a library." *whispers* "What aisle has the milk "
The library, because it has the most stories.