Personal Identification

Three women are in a gym locker room dressing up to play racquetball. Suddenly, a guy runs through the room wearing nothing but a bag over his head and passes the three women.
He passes the first woman, who looks down at his penis.
�He's not my husband,� she says.
He passes by the second woman, who also looks down at his penis.
�He's not my husband either,� she says, also not recognizing the unit.
He passes by the third woman, who also looks down as he runs by her.
�Wait a minute,� she says, �he's not even a member of this club.�