Transcription
The GM: *Makes a clearly overpowered monster, intending for the party to flee.*
The Party:
[Picture with the text "Hit him with your crossbow Steve!" overlaid, of a large octopus/squid-like creature with tentacles raised out of the ocean. It towers over a pair of humanoid figures, one holding a staff in one hand and pointing at the squid with the other, the other person aiming a crossbow at it.]
Fourth thing to remember:
If your party suffers an avoidable TPK once, they won't do it again
Maybe not the exact same TPK, but some will definitely find another very avoidable TPK and try to solve it via headbutts