He appraises their looks and notes even minute details about the way they carry themselves. Bow chicka wow wow. He doesn't want to be like the "sheep" he makes such fun of, the customers who are befuddled when the girls enter the store.
Sammy is a cashier at a local grocery store. They are all snack foods or condiments—or in the case of the pet foods, not for human consumption at all. As yet another of his coworkers begins to admire the girls, Sammy feels a twinge of pity for them for having compromised themselves this way, most likely without realizing it.
Sammy is left alone with his ambiguous feelings and a growing sense of foreboding about what life has in store for him. Sammy hopes the girls are watching him.
Sammy is particularly interested in the most attractive girl, who appears to be the leader of the group. He wanted readers to see the beauty and magic of life, so he tried to describe everyday things using the most clear but beautiful language possible.
He says that his "stomach kind of fell as I felt how hard the world was going to be to me hereafter. If he was hoping to find the girls, he's out of luck — they're long gone.
When he reaches the parking lot, he sees that the girls are long gone. As the girls are leaving, one of the cashiers, Sammy, tells the manager he quits.