1. A joke told in any form, fashion, or manner, that is not found funny by the listener.
2. An expression meaning something along the lines of being like a tease and not turning out excatly as intended or working out. (Like a joke that is built up to be great and then the punchline is a let down.)
1. "Dude, that's a bad joke. It doesn't even make sense!"
2. "I can't believe after waiting so long to find such a wonderful guy, he has to go back to his home country for a few months until he can get his visa renewed to come back. It's almost like a bad joke!"