"'Need' is an interesting word"

One of Luke's favorite words is "need". Here is a sample of some of the phrases he uses it in:

• "I need that car, Caleb." The one specific one that Caleb happens to be holding and Luke wants.
• "I need some M&M's."
• "I need some soda. Not water, I need soda."
• "I need Mc Donalds."

My reply is either "Need is an interesting word Luke" or "That is an interesting way to use the word 'need' Luke". So today I hear Luke say, "Caleb I need the shot gun" to which I hear Caleb say, "Need is an interesting word Luke". I guess they do listen to me sometimes!