Here's a myth for ya: You can get the clap from taking a crap...

 What Can Live on a Toilet Seat? Fortunately, the viruses, bacteria and parasites that cause STDs can’t generally survive on hard surfaces such as a toilet seat. “There is virtually zero chance of contracting an STD from a toilet seat,” Dr. Liu from hackensack (NJ) Medical Center says. Bacterial STDs cannot survive outside the body very long. Some viral STDs like herpes, hep b can survive outside the body for a very limited period of time.

Theoretically, it could be possible to contract an STD if there was fresh blood on the seat and you had an open wound that came into direct contact.

"But if the seat looks clean, it’s fine", he added. Phew...