'HM-HMM' in a movie sentence | examples for 'HM-HMM' from movies

Monica: Hm-hmm!

Chandler: Hm-hmm. (Goes to take another bite.)

Monica: Hm-hmm!

Chandler: Hm-hmm, I told you! (Looks at the clock) I cant believe that Ive only got two hours before I call in sick for work.