Not even all French people know what margoulette means, so this is a way to really advance your language skills. Later, margoulette has come to mean the whole body, especially when used in the expression se casser la margoulette. Margoulette is used in a similar manner:Je me suis cassée la margoulette en faisant du vélo ce week-end - I fell over while biking this weekend. Elle voulait grimper le mur, mais elle s'est cassée la margoulette - she wanted to climb the wall, but she fell down. However sometimes margoulette can be used as an informal way of saying visage (face), yet nicer way of saying gueule.
Source: The Local November 18, 2019 15:56 UTC