When you meet a jackass idiot of a cashier that doesn't understand the concept of not wanting loose change. It comes out to like 19.01, and I hand them a $20 with a penny and what do they do? "What you trying to pull?" They hand back the fucking penny that I won't ever use elsewhere, and give me 99˘. What the fuck am I gonna do with that?

When people try to give you advice on shit they clearly know nothing about.

And finally, when people try to bother you about gas prices. You go into a station for a fillup and some asswipe who may be in your car will go "dude, the station at *obscure place* is like 5˘ cheaper." Well that's great, I'm gonna go 5 miles out of my way, burning up gas on the way, to save 5˘ per gallon of gas.