Why are you not saying "Wow!"?

HAHAHAHAHAHAHAHA! I am still laughing at this...this just happened like 3 seconds ago!

Gavin: I need to poop
Me: Ok go poop and call me when you need me to wipe your bum
Gavin goes into the bathroom and gets himself settled.  Me and Mark are still in the kitchen, chatting.
Gavin (yelling): MOM! Come and watch me!
Me (yelling back): No I'm talking to daddy, just call me when you need me to wipe your bum!
A few seconds go by...
Gavin: DAD!
Mark: What!
Gavin: After I'm done pooping can I have a treat?
Mark: No!
Gavin: Why!?
Mark: You already had a treat!
(keep in mind this is all yelling)
Gavin: But I'm still hungry!
Mark: But I said no!
A few more seconds go by...
Gavin: MOM!
Me: What!
Gavin: Can I have a treat?
Me: No!
Gavin: ERRRRRGGGHH!!!
A few more seconds....
Gavin: MOM! I'm all done!

I go into the bathroom to help Gavin out. He's bent over and I'm wiping his bum...
Gavin: Mom can you see my poop in da toiwet?
Me: Yeah
Gavin: Why are you not saying "wow"?

Awesome!