Definitions by captainbohemia

mend a bone

To facilitate the docking of two penis' as a third party, assuming direct manual control.

"I can't come over and bake cookies after school, because I'm helping Raul and Giorgio mend a bone"

To have a head of bunk. To be so incredibly stupid that one is at a loss of words.

That bitch is such a bunkhead, she doesn't even like nigger jokes!