Post #567549 by TikiTacky on Sat, Dec 4, 2010 11:03 AM

The fact that you are drinking from a straw will have an effect on your drink.... the straw allows the drink to enter your mouth and hit the middle of your tongue first which gives the sour-taste-buds first crack at the drink instead of the sweet-taste-buds on the front of your tongue. Try it, you'll be surprised how you perceive the drink and what order the flavors come up.

Actually, this information is outdated:
http://expertvoices.nsdl.org/sciencegeekgirl/2009/05/05/myth-your-tongue-has-a-taste-map/

But the article does note that temperature can affect taste, and there's no doubt flooding the tongue with ice-cold liquid is likely to fall into that category!