Something you say when someone is boasting/threatening you and is acting like a bastard. It can also be used as a joke. It's prettyrude, and is also a quote from Austin Powers, so you can follow it up with something really dumb to say and everyone will think you're REAL funny.
Dr Evil- You Ain't all that in a bag of potato chips!
President of USA- What??
Dr Evil- Don't go there girlfriend *click* Mm Hmm!
Scotty-Dumbass!
A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.