give someone a head—(of alcohol) cause headache:
- He goes on to tell us that, “It won’t give you a head in the morning.” He speaks with the authority of a man that knows his drink.
give someone his head—
1. (of a horse) not to check or hold in with the bridle:
- He has always been a well-mannered colt, but I have never been able to give him his head.
2. give a person freedom to have his way:
- He’s got some great ideas. Why not give him his head and see what kind of campaign he comes up with.