A: How did you spend the holiday?

B: I went on a picnic in a nearby park one day and went shopping on another.

A: Were there a lot of people?

B: Of course. The park was crowded and so was the shopping mall. I guess shoppers came to the store to snap up bargains during the holiday.

Note: This idiom means "to quickly and eagerly buy or secure something that is in short supply or being sold cheaply." The verb "snap" means "to grasp at something eagerly."