Do You Have a Glory Hole?

I don't know if this really happens, but i think i've seen in films. A glory hole is where you go into a men's toilet and stick your penus in the cut-out wall to be sucked off by some random mouth. Is it true? If you've ever experienced a real glory hole in real life? Let me know. By is this factor fiction? I'm sure i've heard of this. And why would you just put yourPenis in a random, like, a cut out wall? That's very dangerous. What if the glory has, like a machetti inside, just like some radical feminist in there doing what every one thinks radical feminists do