I Have Never Tried This, But A Chemist Friend Of Mine Told Me Of A Practical Joke.

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I have never tried this, but a chemist friend of mine told me of a
practical joke. Get a hold of the victims coffee cup. Make sure its
empty. Put one drop of phenolthalien ( excuse the spelling, I'm refering
to the acid/base indicator) in the cup and fill it with water. Empty the
cup and let it dry. When the victim fills it, their is still residue of
the phenolthalien in the cup. The effect!, the victim will not be able
to make it to the bathroom in time.

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