A behavior artifact from my China trip: I was walking past the massage shop in Horton Plaza after work, and this Chinese lady comes out and goes, "Do you want a masssage?" I immediately respond: "búyào" and kept walking. A couple of seconds my mind caught up and realized what had happened.

(In China, people are always offering you crap on the street - saying búyào - "Don't want" becomes an instinct)