The Apartment (1960)
Jack Kruschen: Dr. Dreyfuss
Dr. Dreyfuss : I don't know what you did to that girl in there - and don't tell me - but it was bound to happen, the way you carry on. Live now, pay later. Diner's Club! Why don't you grow up, Baxter? Be a mensch! You know what that means?
C.C. Baxter : I'm not sure.
Dr. Dreyfuss : A mensch - a human being! So you got off easy this time. so you were lucky.
C.C. Baxter : Yeah, wasn't I?
Dr. Dreyfuss : Nice veins.
Dr. Dreyfuss : [entering his apartment, he suddenly hears loud music starting from next door] Mildred! He's at it again.