When I was 7, my family's Japanese foreign exchange student was being introduced to me.
She bursted out laughing saying my nick name Dev Dev sounded like "fart fart" or "fat fart".
Had the nickname fart fart until my sister moved out of the house.
Maybe you could confirm, but ChatGPT tells me in Japanese Debu colloquially and offensively means "fat" or "chubby", and Bu is an onomotapoeia for a fart noise, like "prrt" in English.
A lot of people apparently have similar self-beliefs. Recognize these are beliefs. Identify and map out your current belief system so that you can analyze it for what it is. That's what you have to do when you are uncertain, is map things out. When you develop more self awareness you can choose different belief systems, like in the matrix.