Wario has invited Mona over to his home.... and she thought she would chill out in the living room while wario was getting ready in the shower, so she took off her shoes and smelly socks and shoes, revealing her stinky feet. Also, Mona helped herself to some of Wario's garlic, so she has gotten some bad gas and starts farting...
For "Wario X Mona" Lovers like
I like how Mona farts while wearing her "Hot Slices" outfit, I like the neck collar style on it.
Mona and Wario (C) WarioWare series (C) Nintendo