How does David Lubar use imagery in Sleeping Freshmen Never Lie?

Imagery:

"If someone cut my head off, the last words whistling through my throat as my face plunged toward the floor would be, 'I'm fine.'"

"But he knew as well as I did that if I threw a party for all my friends, we could fit in a phone booth and still have room for pony rides and a moon bounce."