You would have to shoot someone out of a cannon to break through a termite mound. They much tougher than they look. Here's a guy climbing one just to put it in perspective.
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just say it has gold in it and give him a pickaxe see how long he lasts
 
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Not really about our world but john Lennon snorting coke

Not quite Cash eating cake, but hey.
That's Wilfrid Bramble on the left btw, played Harold's father in Steptoe and son. Not really up on the beatles movies, but is this from 'help'?