Cheers

It's Lonely on the Top (11x22)

Air date: Apr 29, 1993

A night of drinking leads to some surprises and revelations when Carla tells Sam that she drunkenly slept with one of the regulars that night - but can't remember who! Could it be Norm, or Cliff, or Frasier, or what about the most unlikely person in the bar she could have slept with - Paul.....?