From the Super Mario Wiki
Waiwai! Wario (Japanese: ワイワイ!ワリオ, in English, roughly Noisy! Wario) was a one-off gag manga created by Ryuusuke Hamamoto (Japanese: 濱元 隆輔) published in Famitsu DS+Wii magazine in February 2006.
In it, Wario's rest is disturbed by his coworkers' entrances, such as Kat slicing the air or Ashley using voodoo on Wario.