look up any word, like the eiffel tower:
 
1.
When a person is spanked in the ass so hard that it stays red for several days.

If it's darker purple, see jelly stain.
"I heard Gonzo got a Sun Patch from Rosie O'Donnell at the VMA's last night"
"Dude, what a nut gobbler!"
by FunestoCartel September 15, 2006