I saw a sign that said "Saving Throws" in front of the place, and figured it must have been some sort of Dungeons and Dragons thing. Boy, was I wrong.
The second I walked in, I was flipped onto a mat with a dull thump. The mayhem continued from there. They kept singing and praying the whole time.
It was a Christian Judo group. They were purifying my sins through soft, circular martial arts.