What are blue balls or heavy balls (may be a local weirdly Translated thing), how do they feel and are they real?

[msmissydc]

So there sometimes is talk about blue balls or in my language something that is best translated to heavy balls. This might be a new slang word or only locally used I don't know. Is this a real thing (not the balls getting blue)? If yes, how does it feel? Is it different to sexual denial or edging?

Bonus question about the heavy ball thing: When you didn't cum for a longer time is there a noticeable weight feeling from your balls? I mean it only produces the semen Not the main fluid that is cum, which is produced internally in the prostate so I guess it doesn't make a difference or is too small to be able to notice?

[Anonymous]

You know when someone gets you horny but you don't get an orgasm. And balls feel much heavier when I dont cum for weeks

[Anonymous]

There's nothing as blue balls.