And just to get an actual joke in there.....
Superman is flying around one day when he spots Wonder Woman laying on the beach sunbathing in the nude with her legs wide open.
He thinks to himself "I'm faster than a speeding bullet, I could fly down there, take care of business and be gone before she can blink an eye".
So he swoops in, does his thing and disappears into the sky.
Sensing the commotion, Wonder Woman cries out "What was that?".
The Invisible Man replies " I don't know, but all of a sudden my ass hurts".