Casual sex refers to promiscuous sexual activity, consisting of a range of informal sexual encounters. Promiscuity is the practice of making relatively unselective, casual and indiscriminate choices. ... Sexual behavior is a form of physical intimacy that may be directed to reproduction (one possible goal of sexual intercourse), spiritual transcendence, and/or to the enjoyment of any activity involving sexual gratification. ...

A hookup (colloquial American English) is casual sex activity that could consist of kissing, oral sex, to full sexual intercourse. American English or U.S. English is the diverse form of the English language used mostly in the United States of America. ... The Kiss by Francesco Hayez A kiss (from Old English cyssan to kiss, in turn from coss a kiss, perhaps onomatopoeic) is the touching of the lips to some other thing; usually another person. ... Oral sex consists of all those sexual activities that involve the use of the mouth, tongue, etc. ... A pair of lions copulating in the Maasai Mara, Kenya. ...

The "Extended Hookup"- Oftentimes, prolonged instances of casual sex interactions are known as extended hookups, a situation in which the involved parties will occasinally meet for a hookup, go their separate ways, and then later repeat the procedure; always without any sort of monogamous commitment.

See also

• Orgy
• Dogging
• Cottaging
• Casual relationship