when a character is beheaded during a video game of movie, its appropriate to say "ciao head".
ciao in this case is "bye" in italian.
there are also other variations of this term, such as saying " ciao social life" when you can't go out, or saying " ciao gravity" when a person levitates.
Jon: what are you doin?
David: just playing ninja gaidan.. CIAO HEAD!