According to the search results, "watersports" is a term used in the context of sexual activities involving urine. It is a slang term that refers to urination in a sexual context. The term can be used in smut fic to describe urination in a sexual context. It is a specific kink that some people enjoy reading about. The term is not related to sports played in the water, such as swimming or surfing, although "watersports" can also refer to sports played on or in the water.