What's this gloryhole you speak of? You're saying you don't know what a gloryhole is? Well it's not that complicated it's just a hole cut between any partition but usually it's between two bathroom stalls or any type public wall. The key to the gloryhole is that it cut at waist height so that a guy can stick his dick through the glory hole. Annonymously getting sucked off or fucked in public with your dick pushed through the gloryhole is a thrill for both the giver and the getter.
What you may not have considered is that a gloryhole servers not only the pros but all you naughty amateurs too. When the only prop required is a hole cut into a wall then it's impossible to get anything but the hottest gloryhole action. The biggest surprise was to find just how many women frequent the gloryhole, how many of them love to suck cock, how many love the annonymous nature of this type of publicly exhibitionist sex.