noun: someone (usually of the opposite sex, but not always) whos number you have, but you don't really know them. May have met then once or twice(usually while intoxicated). May have never even met them at all. You call them when you are bored and need something to do.
a random is somone usually meet while playing a online game.
they are usually no life geeks who sit around all day playing games and send you messages trying to make fun of you while they sound like a 12 year old boy.
A person who you have/had sex with whom does not mean anything to you. A one off hook-up. You usually meet this type of person in passing at a club, party, or on vacation. Also know as a "Rando".
He is always touching people and is always moaning in class. He is also a short kid who acts very sus. This kid also makes weird faces at people like he is gay.