Remember when..

Yesterday evening I was reading a scripture to Hyrum before he went to bed.  I read the blessing of the water scripture found in the Doctrine and Covenants.  After I read it I began explaining that what we had just read was the sacrament prayer that is offered when we bless the water.  Once I said that, something registered in him. He got of my lap and walked away.  Next thing I know, he was in our bedroom, with my water mug spilled on the floor.  Although it was quite a puddle to clean up, he had definitely picked up on the 'water' part of the my explanation.