‘One day the monk Baofu Congzhan was cutting a melon when Taiyuan Fu came up to him.
Baofu said, “If you say the right thing I’ll give you a piece of melon to eat.”
Taiyuan said, “Give me one.”
Baofu gave him a piece of melon.
Taiyuan took it and went away.’ (Zen’s Chinese Heritage)
This one still makes me laugh.