It's as if no one knows that half of the stuff hanging down from under your arms are actually just muscles. Muscles aren't firm unless you flex them, so naturally the underside of your arms will hang a bit when you relax. Unless you have really smurfing huge muscles, but something tells me girls don't really want that.

The shakeweight has been a prime target for jokes for quite some time on health and fitness related message boards. I wouldn't get one even if you paid me to.