This adorable pic was apparently from an artist named Nguyễn Trần Phương Anh, who has since deleted her account. It’s a real shame, because this is freaking adorable.
Edit: It may even be the origin of the ‘tasting lemon makes your face implode’ meme.
Edit2: It also predates the ‘thour’ meme, so please don’t add it to the tag list.