What Are The Dumbest Things You’ve Argued About?

What is the dumbest thing you've ever argued about?  Burnt toast?  Choice of clothes? Something even more stupid?  Here are a few examples of REAL arguments that I've been witness to:

Freddie Prinze Jr. was not in Starship Troopers-This subject, believe it or not, becomes a very tense situation with one of my friends.  Anger flares all because of this stupid movie.

Leaving the toilet seat up- It's not just men who do it!  LoL

Should toilet paper be over or under?- Horribly stupid argument that defeats it's purpose.

What's your stupid arguement?