Not very good gloryhole etiquette
For the people who don’t know, communication on each side is silent and relies on gestures
If a gloryhole is “open”, the person on the receiving end should grip the bottom of the hole so that their fingers are through but their palm is against the wall/stall. It’s bad form to look directly out through the hole. If there’s no hand, assume it’s empty or whoever is in the stall doesn’t want to receive.
If you do not want to use it, you simply ignore it. If you do want to use it, and either side wants a condom, you pass it through the hole first, then unzip and stick through.
NEVER just stick your dick through a gloryhole without the initial “open” signal, your turning an already dubiously legal venture into indecent exposure.