I think we have a little milk junkie on our hands.  If (god forbid) we are overdue for a bottle, Tyler has a complete meltdown.  Then, the bottle appears and as it approaches his face, he opens his mouth wide and wiggles his head back and forth like a little bird, as if to say "gimmie, gimmie!!".  After the first swallow of milk, his eyes roll back in his head and his eyelids droop, his whole posture saying "aaahhhh....".  Just like a junkie getting that first hit after a dry spell....

Do they have rehabs for formula addicts? :)