The Naked Hallway Collision: occurs when two recently fucked chicks meet naked in the middle of the hall after said fucking.
Girls must be complete randoms and must be unaware of each others presence. Must be naked. No other circumstances apply.
Roommate #1 brings slut home.
Roommate #1 Fucks said slut
Roommate #2 brings unrelated slut from different game
Roommate #2 Fucks said unrelated slut
Slut #1 Walks out of Room Naked
Slut #2 Walks out of Room Naked
Both Sluts (mind you, unrelated), pause
Both Sluts return to respected roommates room.
Hence the Naked Hallway Collision NHC