The BLAM Technique is an onomatopoeia for a gunshot, and is what /tg/ calls the ability of an Imperial Guard Commissar to execute anyone he (or she, I guess) finds guilty of HERESY (and GW had to specifically say in errata that he will not execute himself). It is most often used by editors who search Imperium-related pages for "heretical" edits, cross them out, and edit in BLAM!!. It is also used as shorthand for said executions (as a verb), or for similar executions in a non-40k context. Also acceptable is FWIP, the onomatopoeia for firing an arrow for settings without guns, or where they are a rarity. Occasionally you see orks perform a BLAM with green text after words explaining why they did so, all such blams are assumed to have actually been multiple blams, in the spirit of Dakka.
PAULDRONS ARE STUPID *BLAM* Heresy!
MUSTACHES ARE GAY *FWIP* Heresy!
DAKKA IS DUMB *BLAM* OI I DON'T KNOW WOT YA GITZ ARE ON ABOUT BUT YA HATE THE DAKKA YOU GET THE DAKKA!!!
HERESY IS SHIT! *BLAM* Here- Oh shit. Probably shouldn't have shot him. *BLAM* Excecuting loyal commissars is HERESY! *BLAM* Executing even traitor Commissars is HERESY! *BLAM* What did we just say about excecuting Commissars!*BLAM* -ad infinitum