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A sock used to clear up or collect semen after male masturbation. It should be applied prior to masturbation in the same manner as a condom. Although not a common method of clearing up, it is often the most convenient as it is readily available and can be reused multiple times.
"Hey do you have any tissue, i'm going to go masturbate?"

"Here just use my bop sock"
by psmith99 February 04, 2010
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