Conversations with a 4 year old

I really have to write this stuff down or I forget what he says or how he said it by the end of the day.  That being said, I am documenting what several of our conversations were today!
We were out eating lunch.  Brady and I had just finished and Collin was still eating more and more of his food. 
I said something to the effect of  "Wow, you're a good eater Collin!"
Brady didn't skip a beat and said "They just grow up so fast, don't they?"
I know I say this all the time but where does he come up with this stuff??

The next story has a little "potty talk" that you may choose to skip if you don't want to hear!
I was upstairs putting Collin down for a nap and when I came back downstairs he said
"Ah, that's what I need!  A good friend just in time for me to go poop!"
I was laughing trying to figure out what he meant until I realized, he couldn't go to the bathroom until I came back downstairs to hear him call for me to help him wipe!  Crazy kid!