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Commenters were dismayed at the array of concerns raised.
"Have you buried him under the patio yet?" a typical response reads.
For many commenters, one complaint stood out as the height of entitlement, "I'm struggling to get beyond the sheer gall of someone moaning that you hadn't cleaned his own hair out of his own shower- total lack of respect."
"Dogs are excellent judges of character" mused another commenter.
An absolute genius on page three (of sixteen) suggested that this brother in law really needed was a taste of his own medicine.
"Breakfast is served John. Its alphabetti spaghetti so you can artfully create your complaint on the plate. Or s*** it later, whichever you prefer."
"Go charity shop shopping and return with the most outrageously bad taste clothes in his size that you can find. Present with great pleasure, just before announcing that all his (and "his" borrowed) clothes are in the wash and will take a week to hand dry - noo cant use the tumble dryer, too pricey, got to pay for rugby lessons, haven't we?!
"^ include one pair of shorts, because Mondays are shorts days in this household. NO exceptions.
"Tuesdays are guests cook gourmet for the host days, too. Present him with your menu choices tomorrow.
"Wednesdays are communicate in mime only day, obviously. Absolutely refuse to engage with him if he doesn't mime jovially along.
"Leave little handwritten posh notes in the en suite stating that all guests must leave with all their own body hair. Provide a small ziplock bag and tweezers for his convenience."
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