Do-do-do

After finishing his mini wheats this morning, Joshua said he was still hungry. I was about ready to walk out the door so I opted for easy
"how about a banana?"
To which he responds:
"how about celery?"
"ok, let me cut it."
"I want a big celery."
What did it matter to me what size it was?
As we walked out to the car he was do-do-doing. I asked him about it and he told me it was his flute.