Well, for an April fools day prank, Deviant-Art replaced all user icons with an animated 'So i herd u liek Mudkips??' icon. This sparked a massive amount of spontaneous Mudkip related deviations.
There is a page dedicated to tracking down and favoriting all the impromptu Mudkip art.
I was very rushed with mine...pretend it is good.
MeLucky
Yeah, I think they may have gotten it from this story with a chick who says she talked to a nerd in love with mudkips...and asked him it and she said she would give him the plush doll if he humped it and he did...
Anyway, not too sure but that's what I think(kinda.)