To insert ones thumbs into they eye sockets and wrap the rest of your fingers around their cranuim after inserting your man meat into their mouth, therefore fucking their skull.
"She didn't have enough ass to grab while we were in doggy style so I grabbed her by her eye sockets and literally skull fucked her brains out"
Is when you fuck a chick so hard she feels like she literally had her pussy whipped.
Karen said I couldn't handle it so I gave her a pussy woopin.