If you've made use of the term "wet blanket" you understand that a wet blanket is someone that is just annoying, in the way, ruins the mood, etc. They're a wet blanket. No one wants a wet blanket. How can that keep you warm? How can it provide any kind of comfort? It can't. It sucks.

Out of the womb of the wet blanket came the term "jizz sock". A jizz sock is a slutty wet blanket! When you're jerking off, you just grab any old jizz sock off the floor and then throw it in the laundry bin. No one likes a jizz sock once it's been used.
Jennie: You know how you explained to me what a wet blanket is?

Kelly: Yes I do!

Jennie: Well, I thought about slutty wet blankets... why don't we call them jizz socks?

Kelly:... That... That needs to be put on urban dictionary!!! 'Yea she's a fucking jizz sock... just some shit that was lyin' around on the floor' It's PERFECT.
by jennielovely May 8, 2013
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When you jizz in your condom after having sex
Girl: what's that?
guy: it's my jizz sock, sock waste : cum
by Guy92 March 26, 2010
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When your brother Bret whacks his pecker in your black nike sock then leaves it in your room for you to see
I found a crusty jizz sock under bret’s Bed
by Chris Fleming September 16, 2019
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When someone touches you and you get turned on or when you watch something really sexual, like porn or a girl striping.
Friend 1: *touches your thigh*
You: ahhh, dont do that or I'll jizz in my socks.
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