Suma, a frustrated stackoverflow member, recently asked "what other teams do when someone breaks the build?"
The answers, including photo evidence, were definitely some of the more humourous I've seen on stackoverflow.
I think I prefer Jeff Atwood's penance of doughnuts over physical foam assault and humiliation, but that's just because of my sweet tooth and not my kindheartedness. 
Image source: Jeff Atwood on stackoverflow.com
If you fear being the target of a Nerf assault, perhaps FinalBuilder Server can help with its Build Responsibility flag. By taking responsibility for fixing the build you can mitigate the wrath of angry team members.