What is it?

Hayden was so funny the other day. I came home from the grocery store and he picks up the lime and says, "is this an avacado?" so I tell him no, it's a lime. Then he picks up the ginger and says, "is this a potato?" so I tell him no, it's ginger! You're 0 for 2! I guess I know who won't be going to culinary school to become the next Wolfgang Puck! ha ha :)