Quote from Phoebe in The One with the Flashback
Phoebe: Mr. Heckles, no. No one is making any noise up here. Mr. Heckles: You're disturbing my oboe practice. Phoebe: You don't play the oboe. Mr. Heckles: I could play the oboe. Phoebe: Then I'm gonna have to ask you to keep it down.