It is an epidemic.
I travel for a living, so rest areas and public bathrooms are required. Between the graffiti arranging hookups, holes in walls, etc, this goes on far more than most people realize.
I have heard the slapping sounds in the handicap stall too many times.
Adult bookstores are another favorite for this crowd with the occasional crossdresser, transvestite or real woman on the other side of the glory hole.
There are websites dedicated to disseminating this information. If you read the posts, you will throw up.
Let me remind all of you that this is unprotected sex acts going on here with multiple, anonymous partners.
I you explore this side of society, you will understand that gay marriage is not about two people who are in love, but mainstreaming a lifestyle that has no regard for fidelity, monogamy nor family.