In this picture book classic that belongs on every reader's shelf, two lovable hippos impart funny lessons on the true meaning of friendship. Like all best friends, George and Martha do everything together. George and Martha teach each other (and adoring readers) that even in a close friendship, privacy is important, practical jokes can sometimes backfire, and among other things, pouring split pea soup into your loafers to spare the chef’s feelings...

The kids in Room 207 take advantage of their teacher's good nature until she disappears and they are faced with a vile substitute.