grammarRULES! Diner Style Coffee Mugs - Proper English Lessons on a Heavy Duty Coffee Mug (Verb) Heavy duty ceramic style diner coffee mugs serve up more than just a cup of hot java or tea. Each mug cleverly explains some of the most misused rules of english language grammar. Created by a former teacher and artist, these mugs were designed for the grammatically aware  and those who need to be! Fun and educational, theyre sure to be a hit among all lovers of our language - including teachers, authors, literary scholars, and followers of Grammar Girl. Also makes a great graduation gift. Mug holds 12-oz. For full text on mug, see Product Description