Turn on 

1.To open your awareness.
2.Something that just interest you or makes you happy.

Not just a sexual term. Anyone from the 60's used this term prevalently through out the grooviest time in our recent history.
Timothy Leary "Turn on, Tune in, drop out."

ex1: The warm weather today is such a turn on.
ex2:I just got Turned on by this guy to Jefferson Airplanes album.

Turn on by lux bronwyn October 28, 2006

Turn off

Things that will make what seems like a really good time in bed, into something unpleasant and embarassing.

"My ex does a much better blowjob than you"

"Is your mother/daughter dating"

"How much do you weigh anyway?"

"Can we get this on"

etc, etc

Turn off by Indeedlydoo September 4, 2005

turn down for what 

rhetorical question used by teenagers. "turn up" is the act of getting drunk and high and being reckless so "turn down" would mean sobering up. turn down for what is really saying i am fucked up and will continue to be all night no matter what. the only appropriate answer to this question would be "nothing"

Johnny: turn down for what ?!
Ben: The cops and my dad.
Johnny: You're a pussy! TURN DOWN FOR NOTHING

turn down for what by Blair Waldourf October 14, 2013

Turn it up 

To have a good time right before going out... Usually at night. Also: Getting ready to have a good time.

What up man, what are you doing tonight?

Party at my place, were gunna turn it up!

Turn it up by CaliChris650 January 18, 2010

Turn Down

v. a phrase used by irritated white people when others say 'Turn Up' taking the phrase literally.

To not get rowdy, remain calm

"Turn up, turn up, turn up!"
"Man, turn down already and stfu"

Turn Down by Irate0000 September 4, 2013

Turn Coat

A Person Who Changes Uniforms During Wartime To Appear As If They Are On Your Side. Could Also Be Someone Who's Not Really Your Friend But Are Only Trying To get Information For Your Enemy.

Co-Worker: Watch What You Say In Front Of Him. Because I Think It Gets Right Back To The Bosses Ears.

You: What? I Thought He Was Our Friend?

Co-worker: Nope, He's A Damn Turn Coat!

Turn Coat by DGringo October 2, 2009

turn up 

verb

1. To get wild.
2. To do drugs, most commonly uppers (coke, molly, etc).
3. Synonym to "let's go."

-"Yeah Randy and I got some molly so we could turn up at that Grizmatik concert."

-"I just got some dabs from dude, TURN UP!"

turn up by Dro Claire November 10, 2013