Nah, skull fucking is when you use any cavity that normally wouldng accept a phallus. Eyes, ears or random opening you've created.... normally fatal, or used after they're dead.
why? Not like I shamed them for it. Didnt even out them. Just laughed and moved on despite others wanting to know. Just laughed again and shook my head.
Yeah once you decide to plunge in it and experience the event horizon, you just cant go back to anything else
How do you know? There also so many other types of holes out there to try... though I do hear that black holes suck so hard it isn't a question of if, but that you'll never be able to leave.