look up any word, like cleveland steamer:
 
5.
A phrase reserved solely for members of the Michigan State University ski and snowboard team, meaning: to be engaged in activities in which optimum joy and intoxication are achieved. You can doin' it anywhere, just don't doin' it in the park.
Common phrases include:
"Hey what's up? - Doinnnnnn' itttttt"
"We're doin' it. Are you?"
"Let's doin' it"
"Where are you doin' it?"
"Delta doin' it"
"Mark's definitely doin' it"
"How much more doin' it will it take to be doin' it?"
"I can't doin' it anymore. Wait... nope, still doin' it"
"DELTA!.... doin' it"
"My dad told me to stop doin' it, so I told him to f**k off"
"How long til' the kegs get here? - T-minus doin' it"
by Doinit September 30, 2012
 
1.
Someone who is on top of his game.
Did you see that kid dance, yo he's doin it.
by Dominic October 02, 2003
 
2.
The act of sex. Mainly a UK term, but may be international, can't be sure.
Oh no, Ben and Jo are doin' it again, GET A ROOM GUYS!
by Minardi June 18, 2005
 
3.
The act of holding ones arm up at the chest at a horizontal 90 degree angle, and proceeding to move the arm from left to right, closed fisted, in a fast motion. Normally performed with the eyes tightly shut, teeth clenched in a wide opened mouthed manner and head swiftly moving from left to right in opposite sync of ones arm.

This is normally only performed under extreme intoxication (tri or even quad fade) and is often associated with listening to heavy-metal music, although it may be performed at any time, you'll just look totally ridiculous while doing it sober.
1) DAMN! Did you see Nick last night? After those 19 beers, 7 blunts and 12 lines of coke that fool was straight doin it!!
2) He's doin it!
3)
by blowinn pifff March 03, 2006
 
4.
Your doing your thing , whatever you doing you doing the best at it ; with no fcks given
Girl your outfit is Doin It!
by Butterfingerlovesme February 20, 2014
 
6.
the act of doing something
amidoinitrite?

I'm doinit nao!
by Insanity Prawn May 04, 2008
 
7.
If someone is doin' it, they are hip, fresh, and cool. They're living it up the way they want.
That film school kid spends all day writing and selling screenplays and getting blowjobs from interns; he's doin' it.
by Joseph December 24, 2003