The Yorkshire (Engerland) family that owns the company behind Portakabin are set to become billionaires if the business is sold as expected.
They invented the Portaloo toilet units found at events, building sites and festivals to provide on-site relief.
The founder of the company told FNN:
Well me ol' fruit. I came up wi' idea in 1960's when ah were sitting ont' outside lavvy in the garden reading Stag magazine.
Ah thought to misel. What if the lavvy were portable like? You know flower, transportable on back of lorry.
So I pulled on me drawers an had me a cuppa an told the wife an she said:
Go on cock! Give it a go. You got nowt to lose has tha? So ah did.
The company is valued at £1.5 billion proving there's a fortune in bums on seats.