http://www.mistralgroup.com/SEC_detect.asp be careful what ya touch after partaking kids... i love this quote,, "A positive result only means that there may be a presence of drugs. This presence is not 100% confirmation that the person is using drugs, but it is confirmation that a presence of drugs is probable and further testing by a professional is the next step to confirmation." an open door to drug test you,search you etc.
Sounds like something my vice principle would do... He is the commander of all lurk principles: Mr. Woodcock! Lol, it's really Woodcroft, but I call him Woodcock!