How long does it take to detox from thc?

I have a drug test in college in about 2.5 weeks, used to smoke like 3 times a week for 2 years, i have really fast metabolism, i'm skinny ( 178 cm 62kg) 20 yo male , drinking a lot of water and beer to force myself to bathroom cause i heard the more you go the faster it gets out, will i make it in time? btw i... show more I have a drug test in college in about 2.5 weeks, used to smoke like 3 times a week for 2 years, i have really fast metabolism, i'm skinny ( 178 cm 62kg) 20 yo male , drinking a lot of water and beer to force myself to bathroom cause i heard the more you go the faster it gets out, will i make it in time? btw i didn't smoke for about week and a half ( that's when i learned the test is taking place xD )
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