Mine I think was in
http://www.gfy.com/fucking-around-and-business-discussion/617677-mentos-diet-coke-experiment-girls-drinks-eats.html in response to a Mentos parody clip to which I responded
"Clearly photoshopped. You can see at 1:03-1:05 that the shadows of her bouncing tits don't match up properly. Oh and it's not diet coke, it's pepsi. Everybody knows you can't drink more than a cup of that shit before you puke out your ass and die."