Gum Smile

When a person (mostly found in girls) smiles & you can see an excessive amount of gum above their teeth. It can make a 10 star girl go to a 3 star girl, since one of the most important things in a person is their smile. People also use the "tooth to gum ratio" to decide whether or not there's too much gum. If you are unsure how to properly figure it out, look at the smile, then say to yourself "Is there an excessive amount of gum above her teeth?" The more gum, the uglier the girl is.