Look at the picture below to see what Camembear is doing and how to say it in French!
The majority of French nouns mark their plural with the letter S. However, like irregular plurals in English, there are some exceptions in French, too.
The most notorious are seven nouns that are easier to learn by heart, in alphabetical order, almost like a short poem.
The following seven nouns ending with the letters OU (sounds "oo") don’t mark their plural with an S but an X: Bijoux (jewels), Cailloux (stones), Choux (cabbages), Genoux (knees), Hiboux (owls), Joujoux (toys), Poux (lices).
Au revoir les amis!