When one has a large repertoire of statements that one could use to effectively trump one's opponent in an argument, typically over the internet.
Guy 1 - Bro, you absolutely slayed shawty in the group chat yesterday!
Guy 2 - I had plenty of alphamunition that I'd been saving up
Guy 2 - I had plenty of alphamunition that I'd been saving up
by IdekMcSwagger February 9, 2015