Danbooru uses a rating system for obscenity. Use {{rating:sensitive}} or {{rating:questionable}} instead.
Ecchi (or Etchi) is derived from the Japanese prononciation of the letter "H", short for Hentai, and can refer to a pervert when used as a noun or sexual intercourse when used as a verb. Most often, however, it's used as a noun-adjective, and means "lewd, dirty-minded".
