When your traveling with a group of guys, all sharing a room. Only a couple of the guys are able to bring home some drunken hotties. When they get back to the room, the rest of the guys "play possum" and pretend to be asleep. When the girls are naked and getting in to it, the possum's come to life!!
"Six of us were down in Miami and Bob and Jim brought home these drunk girls. We were playing possum for about 20 minutes, but the possums woke up and got in on the action"