https://www.reddit.com/r/Bad_Cop_No_Donut/
This is an old one, but hey!
http://metro.co.uk/2017/01/08/man-jailed-for-three-days-after-police-thought-his-cat-litter-was-crystal-meth-6369191/
Stupidity times psychopathy equals a pain in the butt for all.