"Guerrilla knitting" has a couple of meanings in the knitting community - to some, it merely means knitting in public, while to others, it means creating public art by knitted means.

Contemporary knitters feel very clever for coming up with edgy language to describe their knitting, but the truth is that. . .

http://events.ccc.de/congress/2007/Fahrplan/events/2358.en.html