Sorry to disappoint you but this is not about some sexually transmitted disease. It’s about words people make up. Carry on.
My husband and his life-long friend, Doug, still speak some bizarre language that they started creating when they were five and met in kindergarten. The most peculiar words I’ve ever heard from them are “syphilis jister,” which in their language means TV Guide. Who knows? It’s not worth asking because they’d have no idea when, why or how they came up with it.