Barney: I can't stop thinking about you. Please give me another chance.
Professor Lewis: Barney, I teach all day. It's the last thing I want to do when I get home.
Barney: But you don't understand. See, I've been going easy on you, holding back, 'cause I was afraid you'd break a hip or something. But, this time, no mercy. I don't care how long it takes days, weeks, half a year.
Professor Lewis: [sighs] Fine. Come in. You can start while I finish grading some papers.