George’s hand remained outstretched imperiously. Slowly, like a terrier who doesn’t want to bring a ball to its master, Lennie approached, drew back, approached again. George snapped his fingers sharply and Lennie laid the mouse in his hand. “I wasn’t doin’ nothing bad with it, George. Jus’ strokin’ it.”
– John Steinbeck
Of Mice and Men, Chapter 1. This shows the relationship between George and Lennie. George has taken on the role of father to the simple, childlike Lennie who likes to catch mice and pet them. But because he can’t control his own strength, Lennie accidentally kills the pet mice that he hides from George inside his pockets.