It's rude to make fun of someone's hands.
Erika watches her classmates making fun of the shy girl sitting in the corner of the room.
Erika wants her classmates to accept her.
Erika tells her classmate a joke about their teacher.
Erika compares the shy girl's hands to a hairy gorilla.
Erika's joke makes everyone including the shy girl laugh making her more popular.
Erika feels bad when her shy classmate slips her hands into her jacket and cries.