Serious answer: So there was a discord server I was in where we changed our nicknames to food items, and I went with 'Mochi'. Then there was the time where the rush-B meme came back for a while, hence the 'Mochi' became the 'Bochi'. Joke answer: Because I'm hitoribocchi.
That's cute! Mochi! And is that this manga? https://en.wikipedia.org/wiki/Hitori_Bocchi_no_Marumaru_Seikatsu
That's interesting! I've never heard of it so now I want to check it out! I didn't realize that you were the social anxiety type! You seemed super outgoing to me! ^^