originated by the greatest pitcher of all time, Dylan Vytlacil..its the now you must turn on in order to use your butt in any way.
I have to fart, i must turn my buttknob first
by Sidric The Entertainer February 9, 2005
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Buttknob-someone that acts like a hemeroid,pain in the ass
by Owegopaddy1 September 10, 2018
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