When a character suddenly breaks into an ear-to-ear grin, it's a Cheshire Cat Grin. When this is permanently part of their facial structure, whether they're happy or not, it's a Glasgow Grin. It may have curlicues or stitches at the ends. This also happens a lot with puppets, intentionally or not. Compare with Cheshire Cat Grin and Slasher Smile. Contrast Perpetual Frowner. Subtrope of Facial Horror. Examples of Glasgow Grin include: