Yuck! Couples who kiss on the mouth are disgusting. And the worst thing is that you can’t miss them: When people want to kiss, their lips get all pink and shiny. Little Léo laughs about it, just like all the other children at the holiday camp. But he has a secret that he doesn’t want to tell his friends: his own mouth has actually started to shine. And in reality, Léo really wants to try kissing.