What is Hat Nuts?
1.
a scrotum with a tiny hat as if to imply that the nuts are saying to a pretty girl, "What up baby, how you doin' tonight? I'm ready for you 'cuz I got my little hat on."
"Sherry's comin' over tonight and I'm gonna give her hat nuts."
"Has john ever given you hat nuts?"
"I heard he had hat nuts for 72 hours straight."
See