How did Jink, Bigger, and Reef get their nicknames?

Though the younger brother, Bobby had always been the "bigger brother', thus, his nickname, Bigger.

Reef received his nickname from Bigger, after he burned the inside of his mouth by accidently sucking in a lit joint.

Jinks got his name as a result of a spelling event in school. He was asked to spell "jinx", and he spelled in "Jinks". Stan (Jinx) caused such a to do in the classroom that his classmates began to chant. As a result, Stan became Jinks.