grammarRULES! Diner Style Coffee Mugs - Proper English Lessons on a Heavy Duty Coffee Mug (Pronoun) 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. Collect all six (see the complete line by searching "grammarRULES!") and save on shipping - but Hurry, these mugs are HOT! FRONT: pronoun. a word that takes the place of a noun in the event that the noun cannot fulfill its grammatical duty. BACK: Pronouns step in when nouns are overworked. They are the understudies, the runners up, the substitute teachers of grammar. They work on a case by case basis, either subjective case or objective case, depending on the noun they have been called in to replace. SUBJECTIVE I, you, she, he, we, they OBJECTIVE: me, you, her, him, us, them