This is the 7155th most frequent French word.
momo
"Momo" in French is slang for "idiot" or "fool."
In this usage, 'momo' refers to a specific type of food, namely Tibetan dumplings.
Les momos sont un type de raviolis originaires du Tibet.
Momos are a type of dumplings originating from Tibet.
In this instance, 'momo' serves as slang to describe someone acting foolishly or clownishly in informal speech.
Arrête de faire le momo et concentre-toi sur le travail.
Stop acting foolish and focus on your work.
Here, 'Momo' is used as a proper noun, presumably a nickname or short form of someone's name.