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off by one

An "Off-By-One" (OBO) in a non-programming context is the act of a touch-typist beginning to type with their hands one key offset from home position.

If the typist in question types fast enough, the resulting nonsense string of gibberish resembling a 14 year-old's SMS history or YouTube comment may actually be sent/submitted before they notice what they've done.
Ex 1:
Sm "Pgg-Nu-Pmr" )PNP_ om s mpm-ptphts,,omg vpmyrcy od yjr svy pg s ypivj-yupody nrhommomh yp yupr eoyj yjrot jsmfd pmr lru pggdry gtp, yjr jp,r ppdoyopm/ (*That was actually harder than I thought it'd be, though notice the prevalence of things like omg and gtp)

Ex. 2:
Carly1992: Wanna come over to my place?
TCAPreditorBate: rirakky!
TCAPreditorBate: totally* Sorry, off by one
by ZenAtWork May 28, 2010
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rub one off

To Masterbate, Rubbing the genitals in a stick like fasion

P.S Daniel, Jamie And Luke All Have Small Penis
Man, I'm Getting really hard and big, i need to rub one off
by Tim Case October 16, 2003
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Rub one off

Masturbation that ends up on somebody else.
Hector tried to rub one off on an exotic looking girl's tits at a ranch in California, but Jesus put one in the back of his head down by the river for what he did so that nobody in town would find his body and have it drawn and quartered.
by Solid Mantis April 9, 2019
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Crack one off in the dhansak

Any retribution by restaurant staff towards rude customers.
Don't be so rude to the waiter, Jeff, or he'll crack one off in the dhansak!
by dannyboffin November 19, 2007
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trap one off

Step 1: fill up the tub just enough so your nob is out of the water.

Step 2: catch a fly and rip his wings off.

Step 3: stick the fly on the end of your prick.

Flies don't like water so he will just walk around the tip of your dick
Go home tonight and Trap one off. I did it this weekend. Felt amazing. Yet another thing to cross off the bucket list.
by Qbaybay October 11, 2013
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Off On One

Behaviour outside the realms of normal, with respect to the individual.

To do one's own thing.

To 'give the birdie' to the world and make a concerted effort to annoy / piss off / offend as many people as possible in a given timeframe.
John: Er... is Calvin off on one?
James: Nope - he usually chases pigeons on his lunchbreak.

James: Woah - does Miranda usually dance on tables whilst inebriated, sans underwear??
John: Nope - she's off on one.
by mr. duffy March 7, 2010
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Tie One Off

If my date goes well, I plan to tie one off.
by Chumpbuster January 23, 2009
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