The name "onacup" is derived from the word onanism (which means masturbation) combined with "cup", as the design of the toys resembles a plastic cup. It also sounds similar to "onna", a word meaning "woman".
Old-style onacups are typically made in a plastic "cup" case with a picture of an attractive anime girl on the front. Inside, there is a soft jelly sleeve designed with nubs and other features to increase stimulation. Lubricant is also already inside.
Onacups are usually purchased at adult stores in Japan. A user takes off the sealed lid and inserts his erect penis into the hole. After masturbating and ejaculating into the cup, it can be thrown away or washed out.
- TENGA English site
- Connell, Ryann. "It might take two to tango, but only one to Tenga", Mainichi Shimbun, December 20, 2007. Retrieved on 2007-12-20. Template:Languageicon Archived from the original on 2007-05-14. de:Onacup