👉 "NNJA" is a slang word in the Wolof language, which is an Afro-Caribbean language spoken primarily in Senegal and Mauritania. It means "I am a fool." The term originated from the French phrase "Je suis un fou," where "je" refers to oneself, "suis" means I am, and "un" translates to "a" or "one," making "Je suis un fou" which translates to "I am a fool."