The act of eye-catchingly sitting on a chair with low backrest by moving your leg over it before sitting down. One should always look the person they want to impress directly in their eyes. Famously performed and originated by cdr. William T. Riker on Star Trek : The next Generation.
If you want to nail that girl, you should do the Riker Maneuver while you sit down.
by MalonMusk May 1, 2020
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It's the unsettling feeling given to others by a man who has removed his facial hair and who, as a consequence, looks strange and unfamiliar. It is often intensified by any one, or more, of these: a weak chin, thin lips, or a strongly cleft chin.
When I shaved my beard off, my girlfriend stopped putting out. She blamed it on work stress, but I think it was the Will Riker Effect.
by chinmusic78 December 8, 2012
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The greeting a new guy gets as an inmate at the prison on Rikers Island, NYC; in other words, he is sodomized.
"Did you hear what happened to Joey? They gave him the Rikers Handshake!" "Oh, man...!"
by Doesn't Shake Hands November 7, 2011
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The opposite of jump the shark, i.e. when a TV show goes from unspectacular/boring/outlandish to completely awesome. It references Star Trek: The Next Generation, which was unspectacular until season 2, when Commander Riker grew a beard. The show kicked ass from then on.
"Man, Dollhouse really pulled a Riker's Beard last week with that awesome episode."
by kingofdanger March 24, 2009
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growing a beard, from scratch. also, when you cause a situation that destroys or seriously injures the starship Enterprise, NCC-1701D.
"Nice beard."

"Thanks dude, I'm going Riker."
by Hamtron5000 January 6, 2009
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When you or William T Riker's beard gets frisky with lady friend and she develops a love Rash. Normally around her tights.
My tights totally have a Riker Rash. Must be from that sexy commanders beard.
by Sarajade86 November 30, 2013
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Riker’s Island green cup — part of a basic personal kit an inmate receives upon entering Riker’s Island prison. This cup has a multipurpose function allowing an inmate to shave, brush his teeth, drink water, or make a hot beverage to drink — using prison ingenuity — while in his cell. Often when prisoners “graduate” — leave prison — they bring their green cup with them both as a memento and a reminder.

You don’t ever want to be put into a position where you have to use a Riker’s Island green up; or, to actually learn and experience how useful and versatile it is in the life of a prisoner.
Allen Weisselberg is drinking out of Riker’s Island green cup. Let him sip out of it for a bit; because If they sweat him a little and threaten him with more time; he may just flip on Donald Trump.

You know how they do new prisoners who don’t know how to jail; have no clout; and, no set to have their back. There is no such thing as soft time or short time on Riker’s Island.
by Mind Hunter the Profiler February 4, 2023
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