Top Definition
A joke that is meant to be funny but isn't. It will often kill the atmosphere at parties and social events (Unfunny Joke conventions excluded).

The joke could be unfunny because it has no pay off, it is said in the wrong way or is too hard or complex for the audience to understand. Other reasons for the joke being unfunny is that it is blatantly plagiarised.
UNFUNNY JOKE EXAMPLE 1:

Q: What's the opposite of Progress?

A: Congress.

UNFUNNY JOKE EXAMPLE 2:

Q: What is Gandalf's grandad called?

A: Grandalf.

UNFUNNY JOKE EXAMPLE 3:

Q: A man walks into a bar effing and blinding.
by Light Brown Carpet April 16, 2014

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