Tweesters are tornado-like creatures. They first appear in Super Mario Bros. 3. Although they are classified as enemies, they are actually somewhat helpful to the player, allowing them to reach high places. To get through it, jump and run fast. In Super Mario Bros. 3 they don't have eyes and they are mostly invisible except for what looks like little bits of dust twirling around in circles. You can get caught up in the tornado-like creature/enemies.