It makes cleanup easier.
I tried it once after seeing loads of memes like this. Admittedly, it felt pretty good. But then post-nut clarity kicked in and I realized I was left with a gross-ass sock and just ended up throwing it away. 0/10, would not recommend.
And even after doing it myself once, I've still never understood the "cum sock" that implies you do it multiple times in a single sock and keep said sock around... that's just fucking disgusting.
I think it must be played up for the weirdness/grossness effect. I can’t think of any scenario where it would make sense.
Look at all the money bags with their socks. Stealing napkins and toilet paper at restaurants is free.
If it's a pleasure thing, Is it something that's performed more by those without foreskin, perhaps because they don't have the natural sleeve effect provided by the missing skin?
I would wear a cum sock mitten if I was freed. Then you toss it off, get a good scrub in. Then you're freed from the weirdest of curses.
Before I read the whole thing I thought the "CRUNCH" was cum socks being eaten as a snack. I'm so glad it's just dobby being free.