Possible Clues:

• Push with the head
• See 15
• Act like a goat
• Goat's assault
• Blunt end - target of ridicule - hit with the head - cask - US backside
• An object of ridicule, however taken at first
• He is number four at St James' Park
• Part of a gun's target
• He was man of the match in Multan
• That's enough to make 'er fat as a barrel