Starbucks Sued: Easy On the Ice!! And Pay Us $5 Million

Starbucks is shorting cold drink lovers by loading up on ice cubes, and one thirsty Illinois customer's so pissed about it ... she's filed a lawsuit.

The issue, according to docs ... is not getting the advertised amount of beverage. For example, a venti is supposed to be 24 ounces, but the suit says more often you get as little as 14 because "large pieces of ice take up more space."

It's hardly rocket science, but the slighted customer is seeking damages in excess of $5 million.

Starbucks says the lawsuit is absurd because ... "Our customers understand and expect that ice is an essential component of any 'iced' beverage." It says it will gladly remake any beverage for an unsatisfied customer.

Starbucks was also sued last month for hot beverages being grossly underfilled.