sgcdonmai about 15 years ago [hidden] Horo refers to herself by the first-person pronoun "wacchi" (another alternate pronunciation of "watashi").This pic is nonsensical, but possibly a reference to Hatsune Miku's "Mikkumiku ni shite ageru" song. 0 Reply Copy ID Copy Link
speck about 15 years ago [hidden] It's likely to mean something.Pixiv has even a tag for "わっちわちにしてやんよ".And 585 hits for it in Google.But no one seems to explain it.It's related to Horo, probably a favorite expression of her. 0 Reply Copy ID Copy Link
葉月 about 15 years ago [hidden] Unlikely. It's just higher-order parody of a meme. XっXにしてやんよ is a meme, わっちわち is just a Horo version of it. 0 Reply Copy ID Copy Link