Starbucks barista makes mean joke on customer's cup

A Starbucks barista is in trouble because of this note "Diabetes here I come" on a customer's Grande White Mocha.

It happened last week in Palencia--45 minutes south of Jacksonville, Florida.

The customer who didn't want to give his name, said it was mean, as two of his sisters have juvenile diabetes.

He wrote "Not funny," and handed the cup back to the barista.

He says he doesn't want an apology. He just doesn't want it happen to anyone else.

Starbucks says it's working with the barista.

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