Based on the rule that states:
If it looks like a
duck, waddles like a
duck, and quacks; it's a duck.
Used in real life to explain the obvious
truth of the matter.
Dude 1: Andi was sure cranky when I asked her about last night at the
bar. She was going with her girlfriends.
Dude
2: Is that all you asked?
Dude 1: Yeh, but when she got home her shirt was inside out, she smelled like cologne and her back is scratched up. I had to
ask.
Dude
2: No you didn't. Rule of Duck. Andi is a whore.