How does Megan McCafferty use imagery in Bumped?

Examples of Imagery:

"I mean, how do you think you'd feel if you opened the door at seven o'clock in the morning to see your exact double standing on your front porch, dressed all in white, clutching a shiny Bible in one hand and a banged-up suitcase in the other? I'm lucky I didn't terminate right then and there."

"I'm trying my best to be patient, to remind myself that it isn't his fault he's one haybale short of whatever haybales are used for."