First off, these are terrible costumes. Second, learn to take a fucking joke for one day out of the year. If it happens outside the confines of Halloween, then you have a problem. Who takes anything seriously on Halloween, anyways?
Well, Ben Heckendorn might be able to pick up the slack. He's made one-handed 360 controllers and did a one-handed Guitar Hero/Rock Band guitar setup. I'd like to see him do a no-hand step for someone.