Diet Wine Glass is a wine glass with Diet - did I eat that on the wine glass. Now you can keep a glass of wine on your diet. The Diet Wine Glass is a 20 ounce balloon wine glass featuring the humorous acronym DIET - Did I Eat That? Laugh a lot with this fun yet beautiful wine glass - a part of the Fine Whines Collection. This wine glass is a great gift for a wine drinker who always seems to be on a diet.