Waters On The Rocks 

When you're really not in the mood to drink alcohol. Instead you just go with a glass of water, or anything non-alcoholic.

Waiter: "Would you like anything to drink, Sir?"

Customer: "Oh, I'll just have Waters On The Rocks."

Waiter: "I see."

Waters On The Rocks by Freshbott2 April 17, 2011

Water on the rocks 

A nerdy way of saying water with ice.

I'm so hardcore I had three water on the rocks last night.

Water on the rocks by The pastamaster April 11, 2011