How does Bill Bryson use imagery in I'm a Stranger Here Myself: Notes on Returning to America After Twenty Years Away?

Imagery:

A garbage disposal is everything a labor-saving device should be and so seldom is—noisy, fun, extremely hazardous, and so dazzlingly good at what it does that you cannot imagine how you ever managed without one. If you had asked me eighteen months ago what the prospects were that shortly my chief amusement in life would be placing assorted objects down a hole in the kitchen sink, I believe I would have laughed in your face, but in fact it is so."

"I have very happy hair. No matter how serene and composed the rest of me is, no matter now grave and formal the situation, my hair is always having a party. In any group photograph you can spot me at once because I am the person at the back whose hair seems to be listening, in some private way, to a disco album called 'Dance Craze '97.'"