A nickname for a boy, usually the second born boy in the family. Given to the boy by his immediate and/or distant family members, it means
"Hmm you are way cuter than your brother"
Yet since immediate and/or distant family members cannot come out and straight up tell the older brother he is the less attractive being, they call the younger one BUBBA, a seemingly creepy name while in reality it is quite flattering.
"This is our eldest son....*PUSH* oh and this is BUBBA! Isn't he so adorable?!? He will succeed in life. LoveLOveLOVE"