I've tried all the tips you get from the "how to raise a perfect family" magazine articles.
Mood swings. Teens are big on mood swings whether they've been smoking weed or not. Doesn't mean a thing.
Glazed and bloodshot eyes. Maybe, but maybe it's a cat allergy making itself known. You can't make a federal case out of something that might be a cat allergy.
Loss of interest in school performance. High school is so god-awfully lame these days that I'd be suspicious of any teen who hasn't lost interest.
No, there is but one sure-fire way to tell if your kid has been smoking pot; if your stash is inexplicably disappearing and there is no other plausible explanation.
Kipling hasn't been over for a visit.
Your brother who last passed a urine test in 1973 hasn't been over for a visit.
The local Green Party candidate hasn't been over for a visit.
But still the stash is getting smaller.
Look for my next self-help column; "how to hide your stash from your thieving pot-head teen," coming soon.