1 definition by ladiesman219

Top Definition
The act where one or several persons ruin (sometimes improve) a photo by performing funny acts in the background which may include a dry gangbang, holding stick like objects up to your crotch or raising your clothing.
Hey Johnno's been photobombing all the photos from the party. See his ass in the shop window in the background?
by ladiesman219 June 23, 2009

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