A pile of dog crap that isn't picked up by its owner and is instead left to be stepped in.
My asshole neighbor never picks up his dogs droppings. Instead he leaves them behind and waits for unknowing people to step on the yard bombs.
by LZ 822 August 17, 2012
1 more definition
A big propane tank out in someones yard.Mostly out in the country.
Billy Joe had a silver yard bomb next to the barn.
by E. Normous July 18, 2006