St Totteringham's Day
St Totteringham's Day is the day when Arsenal fans celebrate the fact that Tottenham can no longer catch Arsenal in the League. It is a movable feast, but usually falls in March, April or May. It is the day to collect on bets made by over-optimistic Spurs fans in the close season who think that "this is the year".
While I like Spurs almost as much as I like Arsenal, I find this hilariously funny.