Absolutely dominating

"ate it", "fucked it", "pipped it", "finished it", "smashed it", or "Did a great job".

The act of 'killing it' would be performed after a joke is being told when everyone has just got done laughing and 'the killer

tries to be funny and adds on to the joke in attempts of making it funnier. This of course is not funny, and in turn, 'the killer' was just a big buzzkill, otherwise known as 'killing it'

The stongest possible form of marijuana. Usually in the form of buds.

Used as an answer for someone asking you why you did betray them while you two (or more people) where a Team in a game where playing in teams wasn't an option but you decided to be team anyways, the answer makes reference that, even being a team, at the end of the game, it was still Everyone vs Everyone, and you only used them just to achieve your goals easier via manipulation, trickery, and similar

Better than dank, the cream of the crop of weed, more potent than one hitter quitter, unexplainable

to go to great lengths to get something