Joke about a troll, a hag and a leprechaun

"I am not joking, Mr. Weasley, though now that you mention it, I did hear an excellent one over the summer about a troll, a hag, and a leprechaun who all go into a bar -"

- Albus Dumbledore to Fred Weasley

There was a joke about a troll, a hag and a leprechaun who all go into a bar with humorous consequences. Albus Dumbledore heard this joke during the summer of 1994 and deemed it "excellent".

Appearances

 * Harry Potter and the Goblet of Fire