Reminds me of another joke.
Superman sees wonder woman naked on the bed legs spread wide and hand rubbing her button while flying past and thinks to himself "I'm faster than a speeding bullet, I can be in and out within .05 of a second and she'll never know she's been violated. So he drops his pants flies in, and pumps away hard for a fraction of a second before finishing up and flying out just as quickly.
Wonder woman notices that something happened but doesn't know what.
"What was that?" she says
"I don't know but it sure as hell hurt my ass" replies the invisible man.