When your party gets so close to a TPK that the DM decides to give players control over other NPCs
Olin: Oh Shillelagh, we're all gonna die!
Desmond: Don't worry, there's only like 8 kobolds.
DM: I don't want to do this anymore, can one of you run Slopnart?
Everyone: You just got slopnarted
Refers to any advertisement where an effort is made to expoit an 'in-crowd' demographic or trend and fails due to its inherent intention to sell you something / make you do something.