Panel 1
Anneliese: Full?
Marie: You're not kidding! So how much shoul we tip?
Panel 2
Anneliese: I think the rule of thumb is 10%, but that's what my dad tips and he's cheap so maybe 15%?
Panels 3,4&5
Marie: Cool. Hey, "rule of thumb-" doesn't that come from...
Anneliese: ... An old law that said it was okay to beat your wife as long as the stick you used was no wider than your thumb?
Panel 6
Marie: Yeah!
Anneliese No, it's an urban legend actually. I read about it once - there was never any such law, not here or in England.
Panel 7
Marie: Really? So someone just made that awful story up?
Anneliese: Yep!
Panel 8&9
Marie: Hmm... ... So isn't that pretty much just as disturbing as if there were a law like that?
Panel 10
Anneliese: On the whole, yeah it - AAAH!!
- BAM*
Frenchman: JE SUIS DE RETOUR!
Mouseover text: The ending is unexpected. That's the joke.