A knobstacle is a person who maliciously obstructs or otherwise prevents you from the reasonable transaction of legitimate business.
"I asked the customer service girl to transfer me to her supervisor, right? Huge mistake! Her supervisor ended up being a ginormous knobstacle who gleefully refused to refund my over-limit charge even though he could see that the merchant had refunded me $29.95 from the accidental overcharge that put me $4.95 over-limit in the first place!"
by Mo Dixley November 12, 2009
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someone who becomes a knob by getting in your way
Naomi's walking to the Cafe, and a student gets in her way. She thinks to herself "What a Knobstacle?"
by naoaro June 3, 2011
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Somebody, friend or otherwise, who is oblivious to the fact they are cock-blocking you.
Dave: "Hey, what's wrong John?"
John: "I'm trying to be cool around Jess but that indie hipster guy from her economics class is a huge knobstacle."
by Dailyfrank March 5, 2014
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1. Some dickwad who gets in the way of you making progress.

2. Cockblocker.
1. I was due for a promotion, but was scuppered by a knobstacle in my office.

2. That fox in finance was definitely up for it, but that knobstacle Dave buggered it up for me.
by Gary The G-Dawg January 5, 2021
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The series of activities that a gentleman undertakes in order to partake in sexual intercourse with a phillie.
This red hot piece o' meat is takin' me right round the knobstacle course!
by Your momma897 November 10, 2008
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A mad dash to relieve scattered pornography and/or sexual paraphernalia on hearing the unexpected early arrival of one's wife or girlfriend.
I thought the wife was going to be with her sister till next Friday, but she came home while I was knocking one off over her old Vogues. Jesus Christ, what a knobstacle race that was.
by Keith Boot May 10, 2007
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