From the Super Mario Wiki
Hyper Suction is a Special Move in the Gamecube game Wario World. Wario loves his coins so much, he inhales them! When the players presses or whilst there are loose coins about, Wario opens wide in a Kirby-type of fashion, and then sucks them up(being the greedy man he is), 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.