This story has gotten a couple of laughs; so, here it is for posterity....
Adam has just a few Cantonese words and expressions, including "maht" (meaning to wipe) and "maht beibei" (meaning to wipe one's nose).
The other day, Adam's nose was running; so, I said, "Come here, please, Adam. Maht beibei."
Adam didn't like the idea. He shook his head and replied: "No Mahting!"