Advent of Code, being better at it than the everything-phobe we work with
Work does a private leaderboard for AoC. Massive shithead of a coworker is in it (the everything-thats-not-cisHetWhiteChristianMale-phobe).
Currently trouncing him (it helps that we stay up to jump on them at midnight). If he continues like last year, he'll give up around day 12-ish, and then we can solidify our documented superiority over him.