Stands for Random Fucking Grenade. Like in COD when someone randomly throws a grenade, and it always happens to hit you.
by BrokenBlackWolf July 6, 2010

by JEHCMH May 4, 2008

"Let's play some RFG and sledge some buildings!"
by Tegrat July 9, 2009

by that1redguy June 28, 2008

by Crimson_Koala April 5, 2009
