Is a Sarcastic Hand Gesture Possible?

it's like the kiwi version, but you do it at the bar, padding your pockets, pretending to look for for your wallet, that you know isn't there/empty/both.

instead of shouting and sticking your tongue out like a twat, you say "you'll have to get this one, i've left my wallet at work..."

thats just called a round, isn't it?