Have Fun
At the start of this drinking game, a Pose Master is elected.
This person can, at any time during whatever game is being played, adopt a pose of his/her choosing. The pose can be as surreptitious, or as obvious as they like (although it must be recognisable as a distinct pose by at least some of the other players). All the other players must copy the person as exactly as they can. The last person to copy the pose loses. The penalty is to down their drink.
The loser then takes over as Pose Master. Whatever game was being played continues. The Pose Master can then strike again at any time!