I've always been able to tell the difference between Coke and Pepsi because they both leave a bit of an aftertaste. Pepsi's aftertaste doesn't bother me and seems to go away a few seconds later but Coke's leaves me feeling nauseous for a good 10 minutes thus I don't drink Coca Cola. Interestingly enough, I can drink Coca-Cola if it's the caffeine-free kind.
@crocostimpy That's what I was wondering the whole time I was reading the article. That, and who in their right mind would willingly put a monkey (or any of the other animals mentioned) down their pants?!