Fingers

Setup:

All players place one finger on the rim of a filled cup

How to play:

1. A player counts: "3, 2, 1..." then says a number
2. At the same time everyone decides to remove their finger or not
3. If number = fingers on cup: Counter is out
4. If wrong: Next player clockwise counts

Loser:

The last player remaining drinks the cup

Variant:

With countdown from 3 instead of free number choice