We know some people guilty of this trend...
A pub in Scotland has banned punters from wearing shoes with no socks.
The Dreadnought, in Edinburgh, has also banned grey tracksuits and has a sign up in the window showing their dress code.
In a Facebook post back in June, they reminded people about their rules saying that:
"... frankly, they just make the place look scruffy.
"We do our best to keep the place looking reasonably smart and, if the first thing you see when you walk in is a group of lads wearing matching grey marl jobby catchers, we may as well have installed a beaten up bus shelter in the corner and invited folk to take a slash against it."
Their tongue-in-cheek post continued:
"Just to prove that our sartorial prejudices cross all boundaries, we're also taking a stand against this horrendous current trend of half mast jeans, bare ankles and shoes.
"It may seem trivial but there was that 'jeans halfway down the arse' trend a few years ago and it went unchecked to the point that we had a lad sitting at the bar with his strides basically round his ankles, displaying a massive skidmark up the back of his threadbare shreddies."
Before signing off the Facebook post with this stark warning to customers:
"PS the days are numbered for flip flops, too."
You've been warned!