[svandamme]

as kids we had to go to anual medical exam via school.
totally boring and BS, so i took a gram of methyleen blue (methylthioninium chloride)from my old chemical play set..
stuffed it in an envelope, and smuggled it in.

So when the nurse told me to piss in the cup, i did.. and while she was not watching, chucked the methylene blue powder in there.

So you got the blue powder chunks in the yellow piss, swirling, turning green.
And a 14 year old that hands that over to the nurse with a straight face going "no idea wtf this is"..

Nurse freaked out and threw a fit..
The Doc came to look, and quickly put 2 & 2 together.. and had a chuckle.

Did get suspension over it.. but totally worth it