well it really depends on several factors. For one thing the heavier you are the more likely you will have failed your test so if your a really skinny dude with a very fast metabolism then its possible you are in the clear. Another thing to note is how active you are in exercising, specifically areobic. If you run a lot or swim or bike or whatever then you might be fine but see it's a little condradicting as well because if you were active during the time of doing it and getting tested then that would make you more likely to fail the test due to the fact that fat is being burned releasing THC metabolites which would cause an instant fail. The only way exercising would work in cleaning your system is if you had several weeks prior to the test. So basically as long as you were very active in exercising prior to those tokes and as long as you are thin with a fast metabolism and you're not a heavy smoker then you should be alright.....but if your not....well lets just say you'll find out real soon how fucked you'll be.