It means took a sharp implement and chopped your neck until your head was no longer connected. Do you mean the idiom "bityour head off"? That means yelled at you severely, usually for no good reason.
a coakroach can go three weeks after its head gets chopped off
Goliath's head must have been chopped off
a dead pigeon with its head chopped off was left on my patio
ganesha
She had her head chopped off.
quagmire
Chopped her head off!!!
He had his head chopped off
Goliath's head must have been chopped off
He had his head chopped off
Because she was Austrian.
chopped off his head