What's this?
An hydrant
What's this?
A tap
"To be in hot water"
To be in a difficult situation in which you're going to be punished for your actions
"To be like a fish out of water"
To feel awkward or uncomfortable because you are in an situation which you have not experienced before
"To be in deep water"
To be in a difficult situation which is hard to deal with
What's this?
A bathtub
"To pour cold water on something"
To be critical of a plan that others thought was exciting or great
What's this?
A bottle of water
What's this?
The sink
What's this?
A dam