"Jokes are directed at banjos, bodhrans, accordions etc. They're all taken in fun and the aim is to retaliate with a better joke."

One I came across recently.

Joker tells 'joke'.
Jokee says, "That reminds me of something Mother Teresa said."
Joker asks, "What's that?"
Jokee says, "F*** you a$$hole! But I'm paraphrasing of course."