My ex FIL introduced himself on our first meeting by showing me all his trophies from being a RSM in the Paras and having been one of several yomping in the Falklands. He didn't need a pickaxe handle to put the fear of God in me or anyone else for that matter.
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crow bar does the job nicely or a pick axe handle.
neverfuck with someone with a decent sized crowbar or a pick axe handle.
or a hammer. hammers hurt.
or balaclava. everyone likes a balsclava.