I think they are some of the filthiest things anyone could do. As if a public restroom isn't already disgusting enough. (the ones at beaches or parks are often the worst)
What I want to know is who is the one
MAKING the gloryhole? Really, who does something like that??

Goes into a public restroom and vandalizes public property in hopes that an anonymous penis will pop through? Like, I am picturing some bloated, filthy queen with a receding hairline and really bad skin, wearing a sweater that is way too small for him coming into the stall and waiting till everyone leaves the restroom, then pulls out a power drill and makes the hole in the wall.
And how does the whole process work? Like, someone who wants to suck a dick just goes into the stall and sits there and patiently waits for a couple hours until someone happens to stick their dick in it? I don't get it? Do they ever know what each other look like?