look up any word, like pussy:

1 definition by J.Rabbit

RMO is an abbreviation for RANDOM MAKE-OUT. An RMO involves making out with a stranger at random.RMO's usually occur under the influence of alcohol.
Jenna: Damnnn Girl, I don't remember anything about last night.
Cathryn: Well Son you RMO'ed about 5 guys..
by J.Rabbit November 15, 2010