When having intercourse with a
super hero. In most cases, Superman because we all know he sleeps around behind Lois' back.
Or sleeping with a prostitute who has slept with a super hero (Superman)
It's rare, but when sleeping with a Super Hooker, you may contract a
SSTD (Super
Sexually Transmitted Disease)
Broseph: "Dude... I slept with this hooker last night and I think I've got crabs... Thing is though, they were the size of a
koala and
trying to kill me..."
Broski: "Sounds like a
SSTD brah... You probably had Super Sex..."