100% of English Majors and Grammar Scholars agree: with every misuse of its and it's; they're, their and there; your and you're and other crimes against grammar, it's just a matter of time before a couple of rogue apostrophes bring the end of civilization as we know it. Warn others with your apocalyptic mug. Holds 11 oz of your favorite hot beverage. Dishwasher and machine washable.