Possible Clues:

• Blunt end - target of ridicule - hit with the head - cask - US backside
• Bottom, where water collected, perhaps?
• He is number four at St James' Park
• Be you a non-drinker? There could be lots to drink in this
• Push with the head
• Scapegoat - strike - bottom - barrel
• What a ram would do to get on and get into a hole
• Might C ask for anything so big for the ram to do?
• Person who is a target for ridicule
• Knock head on cask