Acting as a wingman. The phrase comes from the military; jumping on top of an active grenade will kill you but save your comrades around you as a result of it. It's a selfless act for your buddy.
Synonyms for jump grenade
On this page, you will find 30 slang terms related to jump grenade. Some of the top words include: Tupac'd, dag yo, Blaze, bust a cap in yo ass, Sock, and 25 more.