Why can't two Chinese make a white baby?
Because two Wongs don't make a white.
Why can't two Chinese make a white baby?
Because two Wongs don't make a white.
Listen up, buttercup. This joke is all about the play on words. "Wong" is a common Chinese last name, and it sounds like "wrong." So, the punchline is saying that two "wrongs" don't make a "white," which is a play on the saying "two wrongs don't make a right." Get it now, dummy?