a used condom
After prom night there were so many beetleskins littered throughout the room, it took them an hour to pick them all up
What they call condoms in Maryland and some states around it.
Usually said for a used one, but sometimes for unused.
"Dude! I found a Beelteskin in Jerry's dresser!" or "EW! I found a Beetleskin full of Beetlejuice!"