looking for a bit of info people , i have recently went for a job interview on the railway, and i got word in today that iv got the go ahead to start, but my mate says they do alot of random drug tests, am not into drugs in any big way but im am guilty of small puff, only before i go to my bed nothing heavy or serious, am looking to see if anybody knows of anything , or the best way to flush out the system a.s.a.p, as i have got the go ahead to start on tuesday, any information would be appreciated, even by P.M, cheers