The One with the Hypnosis Tape

Plot:

Phoebe's brother Frank is getting married to a woman twice his age who used to be his teacher. Phoebe asks Joey and Ross to talk Frank out of getting married at 18. But they see that Frank really loves Alice and they agree to be best man and ring bearer. Monica is asked out by a millionaire. Chandler is using a hypnosis tape to quit smoking. The tape tells him he is "a strong confident woman" who doesn't need to smoke. He begins to act like a female.