In the novel’s opening scene, Ray Smith—who is a stand-in for author Jack Kerouac—introduces his unconventional lifestyle, which would be familiar to readers of Kerouac’s earlier semiautobiographical novel
On the Road. Train-hopping is a classic example of Kerouac’s bohemian, wandering lifestyle: it’s adventurous, illegal, and (most importantly) free of charge. By sharing his lunch with the other bum, he shows that he feels a sense of kinship with fellow homeless travelers, even if they might be living that lifestyle out of necessity rather than out of choice, as Kerouac is.