How do you clean crystal meth from your urine?

There are no "crystals" in your lungs after smoking Methamphetamine. The vaporised Meth get's completely dissolved into the bloodstream. It can cause the lungs to get irritate though, and produce sputum which get's coughed up, but that is a normal reaction by the body to discard any unwanted rubbish and only happens after smoking a lot of Methamphetamine or Crack Cocaine.