1) The act of being in the seated position as if seated in a chair only without an actual chair. Usually an impossible kung fu maneuver seen in movies by expert martial artists.

2) The act when a girl is riding a guy top side, then shifts her feet forward and bounces as if getting up and down from a chair repeatedly. Typically, this speeds up the climax time for the guy, leading to less satisfaction by the female, unless the sex is horrible and she just wants it to end, then she can chair the guy and that would mean she is chairing him.
Person 1) Did you see Jackie Chan chairing in that scene?
Pereon 2) Nah, I was fingering your sister.

Example 2)

Lady 1) how was sex last night?
Lady 2) Terrible, i started chairing him just so he would finish
by Ken1plus2 March 20, 2018
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What I am sitting on. Also, the center of my life's activities as it is the most versatile utility in my whole 1-room apartment I share with 10 other people in Taiwan.
I am sitting on this chair right now. I will soon jerk off in this chair. I will soon get out of this chair. I will soon get back onto this chair. I will soon move this chair to where I want to sit. I will soon straddle this chair. I will soon use the pegs of this chair as a dildo. I will soon lean back in this chair. I will soon use this chair as a blunt weapon to murder someone. Indeed, I will soon do EVERYTHING with this fucking awesome chair.
by Bad C dev March 07, 2021
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To wank aggressively in a squatting position atop a female companion in a horizontal position
To chair (verb) Joe Byrne chaired Sarah's cousin and is now being done for public masturbation
by John McGuinness November 17, 2013
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The action of masturbation; essentially a replacement for "masturbating". Parallel to the meaning of "in bed", with the meaning of masturbation rather than having sex.

Pulled from the fact that most masturbation is done in a chair in front of a computer.
1: Man, I had a great time last night.
2: Were you in bed with someone?
1: Nope, I was just in chair, that's all.
by Sundae May 28, 2006
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A thing that is sat on.
IT'S A CHAIR!!!
OHH!!!
IT'S A CHAIR!!!!!
It's a chaaaaair!!!
Jeez. That was a highlight
by asdafadasgaa August 19, 2008
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