it's all in the delivery

Have I told you how much I love the painter (slash plant waterer) here at the Chapel?

him: My son go to UMBC. They start on Monday, so we just take him back.
me: Oh, really? Does he live on campus?
him: Yes. He actually go to two school. He take classes at UMBC, then on weekends, he study anatomy here.
me: Really, on weekends?
him: Yes, his girlfriend go here.

I see his jokes coming a mile away, but I still fall for them every time.