Usually involves tongue and can last anywhere from a few minutes to a few hours.
Often also includes removal of certain items of clothing, dry humping, and touching/rubbing/groping of various parts of the body.
After watching the movie at his house we had a make out session for like 3 hours. I let him take off my shirt and bra and feel me up while we dry humped it was so hot I may even give him a handjob next time.
the act of swapping spit with your significant other... or perhaps just some hottie you met at a party, but anyway, you just sit there sucking at eachother's faces for an extended period of time and if you're lucky there might even be a little romming around of the hands if ya get my drift :p
To 'Make Out' is a form of kissing. It usually involves the toung, similar to "French Kissing", and the placement of hands on the other's body.
This act usually lasts anywhere from 2-8 minutes, and is considered an act similar to oral sex because of the exchange of bodily fluids (in the form of saliva) and the sensual reaction. This can often lead to sex.
Commonly used by: Signifigant Others, Drunken Party Goers, and Lonely People.