When you are mid nut and suddenly hit with regret that the nut isn’t worth it but you alreadycommitted to it so you must go through with it.
I was halfway through a cringe hookup when I realized I wasn’t into it, but I’d already Ubered there and taken my socks off—sunk nut fallacy at its finest.
Is a fetish thing to do. You hold the man's cock and take his nutsac and slap it until he tells you the safe word or if he bleeds. It is also used by gays,hetero and sometimes girls with cocks.
This is the term to describe a males scrotum being covered in seamen after either a successful session of intercourse or masturbation though underwear resulting in the ejaculated seamen still be contained within the underwear.
"Oh god James that was good but all your seamen has ran down and is on your scrotum, you have spunknuts"
The act of inserting the cock into either the pussy or ass so that cock is so far inside that the nuts are literally sitting flush or slapping against the outside of said orifice...Sometimes predicated by the penis 'bottoming out' against the cervix. Should be a goal during any sexual intercourse....