Inspired by the Guerrilla Gardening movement, it is a way to improve a neighbourhood by entering public and private gardens and performing any kind of maintenance that is required, such as weeding, pruning, and thinning. If one already has the tools, it is a zero-cost activity that can be done at any time.
Granddaughter: You were a long time on your walk, Grandma.
Grandmother: Yes, dear, that's because I was Guerrilla Weeding the neighbour's garden. They really need to look after their gypsophila better.
by Matti! Matti! Matti! March 26, 2012
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A LITERAL fire fighter. Taking his job very seriously the Guerrilla FireFighter will sneak around a burning building and Sneak-Attack the fire. Thus fighting it literally.
Man 1: is that firefighter supposed to be literally fighting the fire?

Man 2: That's no ordinary firefighter. That's a Guerrilla FireFighter
by Cody Gobarra October 23, 2009
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the act, process, or an instance of waging guerrilla art.
Every Guerrilla Artist should have a copy of "The Art of Slop" by Gray Water, The King of Slop. It is the quintessential manuscript to guerrilla artfare. Including techniques like, wetworking and other useful shit.
by Gray Water December 25, 2017
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Sending an inflammatory or controversial message via Google messenger to a friend, then logging off quickly before they can respond.
Steve was upset about receiving a guerrilla gchat the other day proclaiming that he looked a little like Danny DeVito with a moustache.
by Sparkle2 August 15, 2012
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Taking over an empty lot and planting a garden for the good of the community. Technically illegal.
He got arrested for guerrilla gardening. All he did was plant a carrot.
by fndsociety November 18, 2014
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