Head & Shoulder

A blonde and a brunette were taking the elevator to the lobby from the 25th floor. On the 23rd floor, a great looking man gets into the elevator. The women exchange a look acknowledging just how good looking this man is. 
The man gets off the elevator on the 12th floor. The women watch him exit the elevator. The brunette turns to the blonde and says,
"God was he good looking, but someone ought to give him some Head & Shoulders." 

To which the blonde replies, "How do you give Shoulders?"

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