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to womanize to live wildly and recklessly to take cocaine.

example: See a certain Charlie "Sheen"
I was sheenin last night with these ladies i met at the club it was a great time.
by manifestjoe January 23, 2008
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When you are fucked up on literally every drug imaginable (weed, x, PCP, LSD, acid, shrooms, coke, crack, meth, whippets, some kind of tranquilizer, Molly, and whatever else you can think of). You are so gone that if you get drug tested, one drop of your urine could kill 5 baby seals. You are on the drug highway traveling towards Warlock.
Dude last night I was soo fucked up, man I was straight Sheenin'.
by Grand Master Warlock March 09, 2011
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To act crazy or psychotic in an effort to promote the self interests of a massive out of control ego that has clearly, already checked out of some inter-galactic space hotel in the E-237 Nebula. To post rambling, nonsensical, non sequitur messages on social media networks, mainstream media channels and earthly-based radio frequency transmitters that are probably controlled by Trolls. To wave hands and smoke a lot of cigarettes while talking with sychophants on earthly based, land, cell and satellite phones, while at the same time being re-assured that you are sane, still funny and relevant by godesses, agents and Hollywood.
You are totally "Sheenin". You got fired from your job because you get drunk all the time. You have all these wild parties at your house on the weekend and in Vegas. You are hooking up with really hot girls all the time and have actually married a few and..... Oh crap! What was I saying? Oh yeah! You are totally Sheenin! You are WINNING and crazy! Rock on you crazy Warlock!
by bignorge March 10, 2011
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When a person is "cruising" fast in a motorized wheel chair or on foot.
"Dude, she be sheenin down the hallway, better get out of her way!"
by kitteninmitten April 27, 2010
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1)A person who is doing whatever they feel and having no regard for what others think.

2)Having a party with rock stars who snort, smoke, drank and spank....all night long!
1) Yo, you sheenin' dude! You really gonna go out with the Asperger's girl just to get her to buy you that car?

2)The club gon' be sheenin' tonight!
by BuffydaWordSlayer April 06, 2011
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