Fumbling about and goofing off, being as unproductive as possible, usually when something important needs to be done such as filing the paperwork Johnson handed you before lunch.
Also can refer to when someone is annoying the shit out everybody within a 50 foot radius, all the while thinking they are in fact making others laugh.
"Man we need to get this project finished, ASAP"
"Yeah but we'll never get it done, Zack is over there knocking off."

(Kid is dancing down an obviously crowded hallway and bumps into someone trying to mind their own business)
"Hey man quit knocking off!!!"
by MissQueen_A March 21, 2014
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When a man (usually younger) has sex with a woman (usually older) who hasn't had sex in a long time
She said it'd been a year since she'd had sex. But I'll still knock the dust off that pussy!
by metallicafan3124 January 19, 2015
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To have casual sex with
"I'd like to knock off a slice of that bitch!"
by Otiam Ness August 21, 2007
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To knock someone off their feet is to be so impactful in someone's life, in typically a positive and affectionate way, that they are taken aback by the sudden force of their feelings for the person
In order for Edita to make time for someone they would really need to knock her off her feet!
by Ulo October 6, 2018
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a wristband or bracelet you get at a strip club that entitles you to a number of drinks, sometimes up to five for a set price. e.g. 5 drinks for $15
Jared: Whats up after work?
Darryl: not sure
Jared: you wanna go knock off a bracelet?
Darryl: hell ya
by Darryl Stevenson April 29, 2008
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To take one of those really hard fast and sometimes (unfortunately) dry dumps. The only bonus to knocking a shard off is they leave the shute clean. One wipe and you are diddly done!
I sat down hoping to post a stump and ended up knocking a shard off.

Sometimes my girlfriend will run out of the room because she has to knock a shard off.
by projectmatter July 15, 2009
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i knocked a bag off on your mother last night and she loved it.
by twow October 17, 2013
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