Word of Wisdom

In primary Tanner had a lesson about the Word of Wisdom. They had some kind of paper to fill out, answering questions that they had learned. Tanner's answer for number 4 made me wonder what he was learning.
#3. How are dangerous substances like traps and can harm you? Tanners answer- "Kill you"

#4. What benefits has the Lord provided us if we keep the Word of Wisdom? Tanners answer- "no legs"

#5 What would you say to someone who tried to get you to use a harmful substance? Tanner's answer, "NO!!!"

Andre looked at these answers and asked Tanner what No Legs had anything to do with that question. Tanner was confused and looked. Then he said, "It says Knowledge!"