Schrödinger's Stoner

Someone who decides whether or not weed is addictive based on whether or not they need it.

Kyle: "James, you smoke weed too much. You're probably addicted."
James: "Nah bro weed isn't addictive bro. I can stop at any time I want to."

*4 hours later*

James: "I am going through a mildly stressful event that will probably resolve itself in the near future. I really need to go smoke."
Kyle: "You're a Schrödinger's Stoner, James."