What exactly is blue balls?

Cause I went 5 whole days of masturbating everyday WITHOUT ejaculating, and each time I masturbated, my balls would be in so much pain and pleasure at the same time. And it would get harder and harder to last.

But finally today I ejaculated and there is no more pain when I ejaculate.

So I just don't get it. Is blue balls your balls being full of cum that they're ready to explode, or is blue balls muscle cramps?

>>18200779
I smacked down this raw dick in your mother faggot kys

>>33988163
>Transphobia won't be tolerated
Your people don't love ya, man.
>>33988180
>you got fake tits and no hole

>>2802579
Nothing. Because I actually go outside and don't spend all my time on /x/.
>there will be screeching and seething at the uncomfortable reality of this