Tiago: When you lose all your baby teeth, the tooth fairy will give you lots of money and you'll be rich! 

Me: You'll be rich in money.  But remember, there are many other things you can be rich in, right? 

Tiago:  Yeah! You can be rich in family and friends. 

Me: Yes, that's right. Rich in love. Rich in knowledge. Etc. What do you want to be rich in?

Tiago:  Coolness. Rich in coolness. 

"Can you please teach me how to unlock the next level of Stickman Epic?" - Tiago said to Siri. 

Tiago: Mom, what's fak you? 
Me: What's what?!
Tiago: Fak. You!
Me: Where'd you hear that?
Tiago: No, I read it.
Me: Where? 
Tiago: Here! (Showing me a magazine)
Me: Ah, that's FAQ.