From the Super Mario Wiki
Hyper Suction is a Special Move in the Gamecube game Wario World. When the player presses or whilst there are loose coins about, Wario opens wide in a Kirby-type fashion, and then sucks them up, thereby adding them to his coin total. Wario can't attack or move quickly while Hyper Suction is being used. Wario's Chomp special move in Super Smash Bros. Brawl is similar to Hyper Suction.