DAILYMAIL – He’s cracked it! Man invents underwear that solves the problem of workmen showing ‘builder’s bum’

Adrien Herve-Pellissier, 24, decided to take action after seeing a ‘particularly bad example’ on the streets of Renne, where he lives in western France.

He has now invented some special boxer shorts that he claims will put an end to the eyesore also known in France as ‘the plumber’s smile’ (sourire de plombier) ‘the mason’s line (raie du maçon).

‘The underwear has a large elastic band on it, you see, so when you squat down we don’t have to see your a**e,’ he told The Local.

After witnessing the harrowing sight in Rennes, he had come up with a prototype he named the ‘sourire de plombier’ within nine months.