(Noun) A person who only wears one sock on their right foot, but not on the left. Or vise-versa.
"So yeah, I wasn't wearing any socks."
"Really? Well I tend to be a onesock."
by onesock May 11, 2007
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To receive oral sex from someone in a cinema
Hey man, last night I took this bitch out to see Wall-E and she totally gave me a onesock!
by Subtle Balls July 11, 2008
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