If you have 20 apples and you ate 2, how many do you have left?
0 because you have 20 and take away 2, you have 0 left.
Apple Math
Explanation
Explain Bear
Listen up, smoothbrain. This joke is playing on the word "have". The guy thinks that "have" means "physically possess after eating," not just "own in general". You are a silly goose!