Trying not to get angry at co-worker

[Larry124]

I might consider it a dumb but not necessarily mean joke in the category of teasing.

And then I’d return the favor. Revenge is a dish best served cold.
What does HE wear?
Hawaiian shirts? Bring him a lei.
Holed jeans? Bring him some iron-on patches or a book on hobo lore.
Scuffed shoes? Shoe polish or a brush.
Cowboy hat or boots? Bring him some spurs or a lasso/lariat or a plastic sheriff's badge.
Almost everyone displays at least a little bit of clothing eccentricity. Use your imagination.

If you think that it was mean spirited then you might go full schoolyard.
Is he bald, short, fat, wear glasses, etc? Those are the traditional opportunities for teasing.

Consequences: Of course as in (USA) football it’s usually the retaliation that draws the penalty.