I like that guy, because then I look good in comparison. Also, when I made that joke, I was thinking that Viagra was the purple pill, but for some reason I forgot that it's blue. Er, that is... I never knew what color Viagra was until I looked it up just now! Yes, that's it.
Actually, I have a cousin who until just recently was part of a long-term biochemistry project at a large university. His job as I understand it was to write the grant requests. Anyway, he was always washing his hands, and now I know why.