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2.
In battle, return fire is retaliatory fire that is used to keep the enemy at bay during a conflict hiatus.
Return fire... OK, cease fire, they've buggered off.
by Kung-Fu Jesus April 15, 2004
 
1.
When you're droppin bombs on a toilet with too much water in the bowl, and it splashes back at you, returning the fire
After 2 Qdoba burritos, i hit the restroom to drop a few bombs, but was met with Return Fire from the feisty bowl.
by messy_marv_32 February 20, 2010