Singer Robin Thicke is convinced he has spent more than $500,000 on marijuana. The pop star, who was arrested in New York City on a pot possession charge last year, has revealed his habit has cost him a fortune, and he has been trying to give up.

He tells Britain's The Sun, "I do smoke. I do everything I'm not supposed to do. Weed is my crutch, my muse, the lesser of all evil. I've spent a good $500,000 on pot. I've tried to quit smoking. I've quit everything once. My buddy runs a store, I can get medical marijuana. When I'm at home, I'm a non-stop chimney."