This is the Happy Half Wine Glass designed and sold by The Fowndry (~$12). It's an actual 200ml glass (not plastic) that looks like a wine glass cut perfectly in half. How about that! Now when you invite a friend over and offer them some wine and they say they'll just have a half glass you can whip this bad boy out and let the laughter begin. The look on their face when they see it! Still, the debate rages on -- is the glass half full, or half empty? SPOILER: broken, and you're about to get stabbed with it. DON'T HIT ON MY GIRL.
Thanks to SC, who agrees the best glasses help people with bad vision see clearer.