Chinese Fire Drill.
It has a semi racist origin that I will ignore for now.
In a mafia game, it is switching wagons at the last moment (minutes normally, can be seconds even) to form a new wagon that actually gets lunched without being a major point of discussion before.
The classic:
"panic! panic! our main wagons both feel town"
"Yoho instead?"
"Sure, it is yoho. never bet against a coin flip!"
Yoho has died.