Nut Spank 

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.

Gasser nut spanked his boyfriend will he nut spanked him back.

That hooker was a good nuts spank because she had a cock of her own.

Nut Spank by AJ Khalifa January 11, 2010

Nut Shank 

When your dog hits you in the junk with his paw.

I was sitting on the couch watching the game when Fido nut shanked me because he wanted to climb in my lap.

Nut Shank by professor bixby January 4, 2012