Gen, short for generosity, used in personal ads to thinly veil offers to make/receive payment for sexual acts. Typically these ads are short, confusing, and only those writing them and looking for them are suppose to be able to easily translate them.
Craigslist m4m ad: bottom up for gen 420. (a male offering sexual acts in exchange for marijuana)

Craigslist m4m ad: top gen. (some ads may be as short as this; a gay male "top" offering a negotiable cash payment for someone to come "bottom" for him)
by nihil8me December 11, 2009
1 adj. A genre in fanfiction used to describe a story in which pairings aren't a main focus.
2 n, pl. A story that is gen.

While I usually prefer stories that are pairing-centric, the other day I read a really good gen fic.
by Anesidora August 21, 2007
Fanfiction written for genernal audiences. Portrayal of the characters as they appeared on the show, without homosexual subtext.
That Sentinel story was gen.
by KimberlyFDR December 13, 2004
Abbrieviation of the word "general". A term made popular among scene tweens by all-girl music group Millionaires.
You: Hey gurl, how's my outfit?
Friend: It's gen. You know, nothing out of the ordinary.
by C00LstoryBR0 January 7, 2011
Folosită în limbajul modern si superhype, este o parte obligatorie a sfârșitului de propoziție, fiind întotdeauna precedată de virgulă. Cine nu folosește acest cuvânt este un pensionar plictisit de viață.
Vreau să mănânc o șaorma, gen.
Introspecția spirituală m-a ajutat să descopăr cauzele stării mele emotive, gen.
by leu May 27, 2014
An abbreviation of the word genious.

1.Someone of an excessively awesome/ genious nature. (n)

2.Something amazing/ ingenious. (adj)
1. Micah is such a gen.

2. That was so gen when the car caught on fire outside.
by Kevinm2222 July 23, 2006