String substitution placeholders

I saw a fun toot by Skye \ Uzi where they found a way to cause a little text substitution by instances with a certain string. This suggests that you will see your instance when I type $INSTANCE$host$ (or not, IDK) which, I think, is a fun little bit of technical hijinks either way.

Update: Skye \ Uzi is too clever by half.

#hijinks #Mastodon #text