One day Superman was bored, as there was no crime in the city and little for him to do. Seeking excitement, he flew off to see his buddy Spiderman.
“Hey, Spidee, what’s say we go over to the bar for a few cold ones?”
But Spiderman was busy. “Sorry Superman, not today.”
Undaunted, Superman visited Batman, who it turned out was also busy.
Lonely and dejected, Superman cruised around the city and happened to fly by a brothel. Using his X-Ray vision, he looked inside to see Supergirl laying spread-eagle on a bed.
Feeling horny, Superman flew right into the brothel, screwed Supergirl as fast as a speeding bullet, and flew right back out.
“What the heck was that,” asked a startled Supergirl.
“I don’t know,” said the Invisible Man as he climbed off of Supergirl, “but my ass hurts like hell!”