Simply,
use curse.you/name in any post/chat. Shows the curse in the link preview.
Some platforms have stricter cache rules. There's instructions on the homepage for more consistent random cussing, though.
Just a simple weekend project. Far from a full-featured implementation(which is planned).
/name is for safe cussing /e/name is for more explicitly worded cussing.
Show HN: Quick random cussing on the internet – Curse.You
curse.you