Question of existence of chemical

[GraceByDesign]

that's just BAAAD!!!!

[scampy74]

Thanks for your help! I was a little suspicious of this but I thought it'd be funny nonetheless. I could try the food coloring idea, that would be funny as well, however I was more hoping that I could catch a friend peeing in the pool and then having a cloud follow them around which would just be priceless.

Thanks for your help everyone!