k: Do you eat cereal in the morning?
r: I did this morning.
k: Oh...I noticed the milk had expired, so I used water instead. It didn't taste funny?
r: No...but now that you mention it my tummy has been feeling weird all day...
So, let me get this straight...you noticed the milk had expired & placed it back into the refrigerator instead of...throwing it away.
Lesson learned: Don't trust, always check the expiration date.