THONG

A narrow piece of material that passes between the legs and threads through the butt cheeks where it attaches to a waistband. Different types of thong include the G-string or T-back, which are the underwear equivalent of dental floss, the Tanga, which has more material in the seat, and the Rio which has straps on the sides. Thongs can be a zipline for bacteria from the anus into the vagina.