SLEEN 

something described as slick and clean at the same time.

"yo man, that ride is sleen" "that's a sleen haircut"

SLEEN by kocheese June 1, 2006

Sleen 

A word with many meanings, can be used as an insult due to it's origin's being a type of Lizard, or alternatively as a way of describing a party/ drinking session.

As an insult/ banter
"What are you, a sailor"
"Filthy slut"
"You're a fucking sleen"

As an adjective
"So, Larry's party tonight in town, all in for a long one?"
"Yeah man, we're gonna get Sleened!"

Sleen by HarkinsEgo December 19, 2011

Sleen 

Common abbreviation of the lovely name 'Celine'. It certainly does not mean any of those other nasty things. :P

Sleen digs the urban dictionary very much.

Sleen by Celine aka Sleen July 4, 2006

sleen 

v.t. to engage in anal intercourse (contraction of the trade name of petroleum jelly - Vaseline - tm) also sleener

After much pleading, James agreed to allow Patrick to sleen him.

sleen by Harold B. Slusser May 10, 2006

Sleen 

An incredibly awesome audience

You guys are so sleen

Sleen by V Dean June 19, 2019

Sleen 

An incredibly awesome audience

You all are so sleen

Sleen by V Dean June 19, 2019

sleen coon 

a creature of some sort who has fish hands, a deformed toe, and is tall as oxen.. he likes to snowboard and sleep.

the sleen coon is out like a light once again

sleen coon by wacko zacko October 13, 2011