A cry nut occurs when one is jacking it to something so wholesome that one can't help but cry as they cum.
Some Bro: Bro I was reading Will You Marry Me and when they started fucking I couldn't help but shed a tear.
Other Bro: Bro did you cry nut? I feel you man.
Some Bro: Bro...
Tight Nut Small Dick Syndrome or TNSD occurs when the penis and scrotum become very small and tight. TNSD makes an average size penis look like a tiny little acorn cock. TNSD is very common, and usually lasts for only a short period of time. Caffeine, cold weather and hard drugs often cause TNSD syndrome.
Friend 1: “Brah, my cock is so small right now, it looks like a tiny little acorn. It’s bugging me out!”
Friend 2: “Sounds like you’re suffering from Tight Nut Small Dick Syndrome brah, should go away in a little”