Sure, the K5 isn't the cutest robot making its first steps into human society, but that doesn't mean drunks get to knock it over. One of the five-foot droids took a tumble last week in Mountain View, when a drunk man took umbrage to its whistlin', patrolling ways. (Knocking it over is a bit of feat in itself: The thing weighs 300 pounds.) It's not the first robot to suffer either. Softbank's (more adorable) Pepper has felt the cruelty of mankind while working in a phone store, while Hitchbot lasted just two weeks when it tried to cross America. It suffered a vandal attack in Philadelphia that cut its journey short.