seriously...

Knock, knock...

Who's there?

The world's largest stalk of celery.  

He could barely hold it.  I've never really bought celery so is this normal?

Poor kid.  My favorite picture is the next one.

He doesn't say it yet but I know it's just around the corner:  

Really, Mom?  Are you serious?

And to that I'll have to answer that yes, I am serious.
Then I might just make him pose with the sweet potato I bought.