I noticed two large women by the bar.
They both had strong accents so I asked,
"Hey, are you two ladies from Scotland?"
One of them chirped: "It's WALES you friggin' idiot!"
So, I immediately apologized and said... "Sorry, are you two whales from Scotland ?"

Hilarious.

Now that's one way to die laughing.

Yes, it's certainly true that a simple, clean joke can elicit just as much, or more laughter, than the dirty, complicated ones!