I'm completely chuckling. My now-five year old (today!) son with oral apraxia has refused to drink milk since the day he turned three. He used to drink upwards of 30 oz a day and then quit cold turkey one day (he was sick and refused to drink his milk) and never went back.
Maybe he knows something I don't? He has made great progress in those two years...going from being totally non-verbal to never shutting up. Maybe it's connected?? That would be the ultimate irony, given how much effort I have gone through to try to get him to drink it...