When a man or woman feels without a shadow of a doubt and only circumstantial evidence that they could have sexual relations with another person. Often referred to as Slam Dunk or "Tenant Thinking" former CIA Director.
Friend 1: Did you see the way that waitress reacts to me, she wants to bang me!
Friend 2: Dude, she brought you a coke that is some W THINKING.
Friend 2: Dude, she brought you a coke that is some W THINKING.
by EPS August 4, 2005