A master of ceremonies/comedian who would 'warm-up' the crowd with bawdy jokes and witty banter in preparation for the dancing girls.
IN REAL ESTATE:
One who prepares a house for sale, employing cosmetic skills, such as hedge pruning, or psychological tactics, such as baking bread while the house is being shown.
ACCORDING TO FREUD:
One who provides ego reinforcement.
One who provides the necessary stimulation to enable a male porn star to perform.