I liked my old spin class better.
A play on the word "spin class" --- normally, a "spin class" is a type of fitness class that involves a group of people riding stationary bikes together in a room. Here, "spin class" is a different meaning: the spin is the rotation of a washing machine in a laundry mat. This unusual type of spin class is probably not as effective or fun, and it's unsurprising that the person in the machine dislikes it vs. cycling.