Kitchen water?
The Rookie was at the kitchen sink getting a glass of water when he heard a horrified “What are you doing?” from grandson #1.
The Rookie replied “I’m getting some water”, and grandson asked (still horrified and a little louder) “Why?”. The Rookie then confusingly replied “Because this is where water comes from?”
The Rookie was then informed “No, water comes from the front of the refrigerator.” :-)