If a guys head gets cut off will he gush out blood through the neck?

Yes, if a person's head is severed, there would be a significant flow of blood from the neck due to the severed arteries and veins. The blood would gush out due to the pressure from the heart until the heart stops beating and blood circulation ceases. However, the exact amount and duration of blood loss can vary based on various factors, including the method of decapitation and the individual's overall health.