When it comes to describing small motorcycles, there are several synonyms you can use in place of "mini-bikes". One popular term is "pocket-bikes", as they are small enough to fit in a pocket, figuratively speaking. Another option is "mini-motos", which is derived from the French term for motorcycle, "motocyclette". "Midget-bikes" and "micro-bikes" are also used to describe these small vehicles. Some people also refer to them as "pit-bikes" due to their common use for riding in the pits at racing events. Regardless of the synonym you choose, these mini-bikes are a fun and unique way to experience the thrill of riding a motorcycle on a smaller scale.