Ask for two or three little jokes, the kind that amuses your girlfriend, and it must be interesting.

Me: Master, I helped an old lady two days ago, and I made a mistake of 2000. When I was driving out this morning, I met a man who touched porcelain and made a mistake about 1500. It hurts. Master Bao: Alas, there is a cup on the donor's desk. You picked it up and lost it. Me: Oh, it's comfortable, Master. You want me to release it, don't you? Master Bao: No, no, no, that cup was a donation during the Qianlong period. You gave it to three people.