When a person runs up to a person with a broken bone and happily punches/hits them in that spot without realizing it. Also dosen't apoligize afterwards and plays off the experience.
Cripple:*shouts in pain*
Observer: dude what happened to you?
Cripple: that kid just f***ing mcduffed me it hurt like hell.
Observer: he atleast apoligized right?
Cripple: no he just left... What kind of a person does that?