Gerald is careful. Piggie is not.
Piggie cannot help smiling. Gerald can.
Gerald worries so that Piggie does not have to.

Gerald and Piggie are best friends.

In I Am Going! Piggie ruins a perfectly good day by telling Gerald he is going. But if Piggie goes, who will Gerald play ping-pong and wear silly hats with? Mo Willems, a master at comic pacing, delivers another perfectly delightful Elephant & Piggie schtick that will have kids laughing as they learn to read.