The effect of caffeine on spiderweb construction. Noever, R., J. Cronise, and R. A. Relwani. 1995. Using spider-web patterns to determine toxicity. NASA Tech Briefs 19(4):82. Published in New Scientist magazine, 27 April 1995
I’m also a little worried about this, also from wikipedia:
It’s not the labeled side effects that worry me too much, however. I’m much more worried about caffeine’s apparent ability to turn you semi-translucent.