The loser's phone wallpaper and lock screen become a screenshot of the final standings, their team in last, for a month. They see their failure roughly 96 times a day, which is the median phone-unlock count. Spot checks occur at league gatherings.
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: fantasyleaguelottery.com