(n.) A condition which occurs while or directly following the witnessing of an action of or statement by a person who would fit the description of a douche bag. Usually tied to the emotional sensation of being embarrassed on behalf of another person because whatever they just did was packed full of douchery. Sometimes accompanied by the phrase "are you fucking kidding me?" and a sour facial expression.
Josh: I can't come to the party tonight dude, I gotta get my burn on at the gym. Plus I just got that new Dave Matthews. Yeah!
Eavesdropping bystander: Wow. I just got douchebumps.
A sensation that one feels in the skin when you are surrounded by a room of douche bags or particularly douchy douchetastics. The sensation can usually be overcome by immediately removing yourself from the company of any douchebags.
Jimmy, duck so douchetastic doesn't see us over here and talk to us about his douche bag life. I'm trying to avoid another case of douche bumps.