LOL! Bro....I still do it in the grocery store on occasion! No one is impressed! I'll probably get arrested at some point!!! 
We shall call it the "Grant Michaels."
True story: I was driving with my girl after we went out to dinner a few weeks ago. We were waiting at a light to make a right turn but there was no breaks in traffic. This big fat white woman behind us was just going bananas honking the horn, cuz she couldn't see that there was actually cars comin and we couldn't turn yet. Dunno what came over me, but I was so angered that I stuck my body out of the car, held up an imaginary machine gun, and fired off several rounds, saying "BANG, BANG, BANG." Long story short, she stopped honking. I like to think that this fat woman won the battle, but I won the war.