Protein from eggnog, anyone???

I love eggnog, especially this time of year... and I found a low-fat one today at my local Kroger grocery store. 1/2 a cup has 2.5g of fat, and 5g of protein! The only thing I ever used to look at on the label was the calorie/fat content... but wow - this is a great and yummy way to get in some protein quickly! Whoo Hooo!