Giving a handjob or handy.
It should be reasonably clear where the idea comes from...
A: So did you go with that hot chick I saw you with the other night?
B: She gave me some pretty good gear, I must say.
A: Nice.

She was giving gear to two guys at once, the slut.
by PurpleJazz December 11, 2007
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Giving the gears is to tease someone by giving them a bit of a hard time but not in a harsh or unkind way.
They were giving me the gears because I went golfing with the boss.
by Levk February 11, 2017
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To harass, annoy or throttle someone - similar to giving someone shit or just bothering the living hell out of them.
Ramon has a bad habit of always giving me the gears.
by KImCobain March 03, 2015
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