Compare and with Slasher Smile, where the character's feature could have the same affect, but it does not necessarily mean they are evil. Not to be confused with More Teeth Than the Osmond Family, where the character's teeth could be serrated, but the mouth line outside is straight. Compare and Contrast Bizarre Alien Biology, where the mouth line could be serrated or zig-zagged for instance, but could have a different function or place on the body, sometimes mixing this trope with Belly Mouth. Examples :