I heard drinking black coffee with no milk or suger and a lot of water helps clean your system from thc is that true?

False: Thc is stored in the fat. It comes out at a fairly constant rate - it will take between 2-4 weeks to get out of your system.

....myth.....: THC binds to fat cells in your body and leaks out to be metabolized or lost over time. In single exposure light use it may be gone in less than a week. In heavy users it can take months of abstinence before it is undetectable in you pee or saliva. Regardless of the myths you read on the web, there is no flush out med/drink or food.