This would be specifically in the context of Mario Kart Wii online, where players using bikes (so most players) are often wheelying for extra speed on straight roads. Staying right behind another to get a draft for extra speed is fairly common too. However, if you bump into someone or something while in a wheelie, you get significantly slowed down for a few seconds.

People usually just wheelie bump people from the side but on occasion when someone is behind me trying to get a draft, I’ve had the thought to suddenly drop my wheelie and slightly brake, causing them to lose a lot of speed, and then I can just start another wheelie.

Am I onto something or is there a reason nobody’s doing it?