Last one to faint

A popular practice used to determine who out of a group of people will carry out an unpopular task - if such an issue becomes contested, someone must call out "Last one to faint!" and all those present must pretend to faint. The last person to do so must do the chore (for example), even if they don't know the rules.

Barnaby: Ouccchh... who's gonna tell Chrissy he's not invited to the party?
Krispin: Last one to faint!
All: Ahhhhhhh BRUNO!
Bruno: Aww man!