Rylan and Susan night time exchange

So Rylan was asking for water as part of his usual night time ritual, you know the drill: I need ice, I need water, I need my blankie put on, repeat...

Mom was rocking Susan to bed when Ry asked for water for the 2nd time around and the following exchange occurred:

Ry: I need water.
Susan: OK
Ry: No, not you Susan. Dad!
Mom: Laughing hysterically
Dad: Laughing and getting water
Susan: OK