Howard: Hey, Ma, twinkle, twinkle, your little star is home. (Fails to open the door) Ma, the chain's on the door.
Mrs. Wolowitz: Howard? I thought I wasn't going to see you till tomorrow.
Howard: Yeah, well, Bernie's not feeling well. So I thought I'd stop by, tell you about the greatest adventure of my life, see if you can make me feel bad about it.
Mrs. Wolowitz: Uh, uh, okay. Hold on, I'm not decent.
Howard: All right. (Speaking to himself) Woman hasn't tied her robe in 20 years. Suddenly she's not decent?