So, Yogi Bear gave him the meth.
Well, Yogi does claim to be smarter than the average bear and Jellystone park is rather large. In fact large enough that a "Smarter than the average bear" could have a meth lab hidden in a cave somewhere else in the park. Also Ranger Smith doesn't seem to be the smartest LEO around.
What is Manuel Paz Sanchez Jr's DU name?
Boo Boo.