Middle finger—"Have nice day, for real."
Thumbs-up—"I completely disagree (or disapprove). You a jerk, Anthony."
Nod—"I actually listening to what you saying to me at this moment. I enthralled by sound of your voice. I not thinking about lunch."
Bow (for Bizarro Japanese people)—"I so glad boss picked me entertain you, American businessman. I only worked 13 hours today and still fresh as morning dew. It my pleasure find you young female escort."
Pinching nose (for Bizarro base-running coaches)—"Do not steal second base" or “Steal second base.”