Anyone remember the joke about Superman seeing Wonderwoman through her bedroom window?
She was on all fours, naked, with her arse in the air, so Superman (with his powers and all) thought he was so fast he could get in there fuck her and be out before she knew it.

So he give it a go...

Wonderwoman said "what the hell was that?"

The Invisible man said "I don't know but my fucking arse is killing me!"