i may just an animal, but this ferret has a degree in biochemistry
hehe, most food is acidic to some degree, thats what gives it bite, spicy food especially
and given the quantity of pepsi, or coke for that matter produced per day, as both have ascorbic or citric acid as flavoring, a barrel of what is probably highly concentrated and corrosive acid gets diluted down to a tickly feeling when you drink it
as for the ability for pepsi to make little black sinking lightening tentacles grow out of your arm and loaf of bread when poured on it, i always knew the stuff was evil, i drink coke, but after seeing this, i'm never putting any cola in a test tube again, look what it does, straight out the bottle is best
oh, yea, i came originally from an island in the caribbean, lots of old wives obscure remedies, the warm coke remedy works great