Howard: Ready for bed?
Bernadette: No. I need to brush my teeth, but your mother’s been in the bathroom for, like, an hour.
Howard: Oh. Yeah, she sometimes has problems doing her business. Hang on. Ma, give up! Tonight’s not your night!
Mrs Wolowitz (off): You don’t know that! I just sat down!
Howard: Come on, take a break! Bernadette needs to brush her teeth!
Mrs Wolowitz (off): She can come in and brush her teeth! I’m not embarrassed!
Howard: Problem solved.