When a mans cum sock becomes crusty enough to have a condom put on it and be inserted into the vagina or anus, resembling a dildo. Hence the name, cumsock-do
I walked in on my mum using my cum sock to jack off my sister, Im calling it a cumsock-do!
by cookedbogan69 January 11, 2021
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Used in one of two ways.

1) In a joking way to call someone disgusting.

2) Said in an argument to express disdain.
1) Oh My God Karen! You're such a crusty cumsock.

2) Listen up here you crusty cumsock! You're a fucking degenerate who doesn't deserve my time and effort.
by A very creative cunt February 22, 2018
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a cumsock is a sock you cum inside and keep for later cumming sessions
"jake has a cumsock. what a nasty mofo"
by miloz June 27, 2022
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When you find a hard sock in your brothers room
child: mom i found a weird cumsock in timmys room its rock solid
by NRdog March 16, 2021
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basically if there is a gross ass nasty ass mf slug and you pour white paint on it for some dumb ass reason you can call that bitch a cum sock
by Dahashbrowns November 30, 2021
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A specific type of sock, usually one too small to be worn on the foot, used by men in order to contain their ejaculate post-masturbation. Should this sock be found by ones mother, it is to be burned and never spoken of again and the man will be forbode from masturbation for a minimum on 6 months.
I couldn't get a gyal last night so I had to use my cumsock.
by ballsdeepinmustard June 21, 2023
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