I had to read it twice to even get what you meant. I just read it B. R. A. totally separate letters. Someone's bound to notice and make stupid jokes but I wouldn't be deterred, you could pick up on anything if you try hard enough and you don't even have to use your middle name if you don't want to.
My initials are NCH and I somehow ended up with National Child Helpline jokes when I was at school, don't even get why that's funny.