Definitions by Kobajai
Bone Bro
Someone who is in a sexual activity with another person without being in a full relationship. It isn't romantic and can be both straight and gay. During the intercourse the word "BONE" is commonly used to show excitement.
"Hey do you know Sam?" "Yeah he's my bone bro". "Woah nice" "BONE"
"Matthew, will you be my bone bro?" "*baby gurgles and laughs*" "HEHEHEHEHE BONE BONE BONE"
"Matthew, will you be my bone bro?" "*baby gurgles and laughs*" "HEHEHEHEHE BONE BONE BONE"