Easy way to check if your cat's on drugs:
1) Does it display a lack of energy and ambition, preferring to lie around the house?
1b) Does it suddenly display bursts of energy when food is present, and relapse as soon as the meal is finished?
2) Does it sometimes fixate on innocuous things (walls, scraps of paper, etc) to the exclusion of all else?
If you answered yes to any of these questions, your cat may be addicted to drugs. Please contact your local pet shelter for further directions on how to break the cycle and give your cat a healthy and productive life.
Also, until anyone says otherwise, I will assume that the 11 pounds of weed were shaped like a cat.