in order for him to smoke pot out of a black n mild he would either need to empty all the tobacco out and and then pack the pot inside,very hard and time consuming,the other way he would need to split the cigar in the middle empty tobacco out put pot in then re-roll,wich is easily noticable...

my opinion hes not using them for pot,ive never seen someone smoke pot out of them,usually phillie blunts,or garcia vegas,,,but never b&m the kids these days enjoy smoking them,i find them gross..

but to know if theres pot in them just grab the one thats half smoked rip it apart and see if its tobacco or weed...or get a piss test kit from cvs tell em piss on it then you will know if he smokes pot....

but if your kid is doing good in school and nothing seems to be diffrent than a yr ago,why bother insulting him,and another thing your his father tell your son with out being an ahole and ask him what he does and if he uses pot and explain to him about the cost and consequences if he was to get cought by school officials and stuff....if he says no then he says no dont pressure him about it...if things go down hill then take the steps to finding out the problem...

but black n milds are a popular thing for teenagers to smoke these days,,better off than ciggerettes,,,,and one cigar of them last a while...maybe thats why he has a half of one!!