This was once a bug, but I intend on turning it into a permanent feature.
If you've played the game, you would know that the ball gets faster with each hit. But during development, I noticed that if you hit the ball with the top or bottom edge of your paddle, it goes insanely fast (max speed). There's some shenanigans behind why that happens, but in the next update, I will turn it into a fully fledged feature. Enjoy surprising your friends and family with this trick!