A slang term used for the act of sexual in counters or the term used for "getting it on."
by Cookie Monster10531 December 8, 2017
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*enters english class
teacher: alright class stop goofing around
students: but were trying to have fun
teacher: what is this word fun, its not in the dictionary
by lil_p u m p November 4, 2018
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FUN is an acronym for frivolous unburdened nookie
My girlfriend and I decided we would buy all the food and drink required to see us through to Monday on Friday. Once we had done all the shopping we would head straight home, unpack the shopping and put it away. We would then take the phone off the hook, switch off our mobiles and have fun all weekend until the time came to get upto get ready to go to work on Monday morning.
by St. Ias November 8, 2005
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I fun all the time.

He was funning in the street.

We funned at the park yesterday.

He had funned, but he never funs anymore, now that he has entered graduate school.

The funning homeless man was arrested for indecent exposure.

Do not fun. Funning is strictly prohibited.

He funned the computer game.
by Aaron UofM February 20, 2008
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fun is equall to sex
wther lesbian or gay or straight, fucking =fun
mmmmm this is fun mabye next time we shoudl invite my little brother along
by hardcorecliche October 11, 2006
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Used to describe a friend who is unattractive and/or fat when asked whether he/she is hot or not.
Sally: Sorry, I already have a boyfriend. My friend Rachel is single though.

Bill: Is she hot?

Sally: She's... fun.
by Dranzz April 20, 2011
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