From the Super Mario Wiki
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Hyper Suction is a Special Move in the Gamecube game Wario World. When the player presses or while there are loose coins around, Wario opens his mouth wide in a Kirby-esque fashion and collects them by sucking them up. Wario can't attack and moves very slowly while Hyper Suction is being used. In Super Smash Bros. for Nintendo 3DS / Wii U, Wario has a custom special move that is somewhat similar to Hyper Suction albeit its used to attack and called Inhaling Chomp .