You shouldn't waste water
Skip got lost on a hike on a hot day and is trying to find his way back to civilization carrying nothing but a canteen.
Skip wants to cool off.
Skip finds a large tree that provides shade from the sun and sits under it for a while.
Skip pours the water in his canteen all over his face and body and feels refreshed.
Skip cools off and regains enough energy to catch a lizard to eat for protein.
Skip becomes dehydrated when he can't find a source of water to fill his canteen and drink from.