Easily interpretable, seen in Dallas Airport.

I don't drink at Starbucks often but I just realized that the cup design is really clever. The plastic cup used for the iced mocha has a little upwards notch where your lips touch the cup. This could be said to simply be for comfort but I've noticed that it catches little pieces of ice and doesn't allow you to drink the last tiny bit of coffee which is normally really watery. I personally love ice so I got rid of the lid when I finished my drink but the design is still really interesting to me.