Answer:
What is an acceptable act of violence during saint Patrick's day?
What loses its head every morning only to get it back every night?
If you drive on this, pedestrians and the police will be pretty upset with you.
Take one royal word in the plural and make it singular by adding one letter
What has one head, one foot, and four legs?
A leathery snake, with a stinging bite. I'll stay coiled up, unless I must fight.