For one month, whenever any league member says the trigger word in the loser's presence, they must immediately perform 'I'm a Little Teapot' with full choreography, regardless of venue. The trigger word is chosen for frequency: 'points' is a war crime. Refusal extends the term a week.
The long haul: this is not a one-afternoon sentence. With a time commitment of one month, the punishment keeps paying out (for everyone else) long after the season ends. Long sentences need a written end date and a league-appointed enforcer who checks compliance.
Seen in the wild: fantasypunishments.com