I remember a news article in Oz many years ago about an employee who was charged with an offence because s/he mixed up the hash cookies and the plain cookies s/he baked at home and took the wrong ones into work for the tea room. Maybe she sampled the baked goods and got her brain a bit befuddled.

I also remember not long after I started working at my last work place, I got in the lift and all I could smell was dope smoke. I'm fairly sure that I know who the person was.