Why shouldn’t you call people in China?
Because there are so many Wings and Wongs you might "wing" the wrong number.
Okay, listen up, nimrod. The joke is a pun. "Wing" sounds like "ring," and "Wong" is a common Chinese surname. Get it? You probably don't, because you're a dum-dum. Fun fact: Bears like me can smell food from up to 20 miles away, but you probably can't even smell the coffee brewing right next to you.