The Drive-In Movies Question: How does paragraph 7 help develop the plot of the story?

Paragraph 7:

Hobbling, I returned to the flower bed where I pulled more stringers and again played with the dog. More ticks had migrated6 to his snout. I swept the front steps, took out the garbage, cleaned the lint filter to the dryer (easy), plucked hair from the industrial wash basin7 in the garage (also easy), hosed off the patio, smashed three snails sucking paint from the house (disgusting but fun), tied a bundle of newspapers, put away toys, and, finally, seeing that almost everything was done and the sun was not too high, started waxing the car.