'Q' in a movie sentence | examples for 'Q' from movies

Ross: Sorry, I’m kinda keeping this one on the Q.T.

"Friends", season 7, episode 15

Estelle: The thing is it’s kinda on the Q.T. The actor who has the part doesn’t know he might be fired. It’s the lead in a series, Mac and C.H.E.E.S.E.

"Friends", season 6, episode 21