When snow falls on Chicago, the charitable spirit of community washes over some of us. Others get a bit more proprietary (dibs, anyone?).

Some get downright grabby -- and sometimes, every once in a while, they get served a cold dish of revenge.

David Welles works for a security company, Tunnel Vision Technology. So when his snow shovel was missing from his front porch, he checked the tapes from the many surveillance cameras around his house, the Chicago Tribune reports.

He spotted a woman swiping the shovel, watched her dig out her car with it, then grabbed his new snow blower and went out for a little payback time.

Watch the WGN video of Welles's vendetta. Wondering if he felt any guilt about it? "It felt really good. I'm not gonna lie, it felt really good," Welles says.