Are You some kind of Math Mutant ?
I've always wanted to be running a check out and reach under the counter, pull out an Abacus and slide a few rows back and forth real fast and then hand back the change. Just to mess with peoples heads.
That and:
be driving an 18 wheeler box truck, pull into a Truck Stop, back in real fast between 2 other Rigs and then jump out with sunglasses and a White Stick then make a round of the Rig tapping away checking clearance and walk in to the Cafe just to mess with people;)
oooooo sh!t, tooo funny!
hand these kids today $11.00 for a $5.75 purchase and watch them melt down...