Did you hear the joke about the butter?
What is it?
I can’t tell you, you’ll spread it.
Did you hear the joke about the butter?
What is it?
I can’t tell you, you’ll spread it.
This is a pun that plays on the dual meaning of the word "spread." It refers to the physical act of spreading butter, but also to the act of spreading a secret or rumor. The humor comes from the unexpected use of "spread" in relation to a joke.