A window cleaner signals to his pals before leaping off a terraced house into a paddling pool – for a £50 bet.
Dad Mizzy Duffy, 40, assesses the 20ft drop before landing bum-first in the water.
He then emerges to shout “freezing” and walks off cradling his crotch.
Pal Kieran Oldham, who filmed the stunt in Rochdale, Greater Manchester, said: “We thought he was going to chicken out.”
But people who watched the 48-second clip slammed his antics.
One said: “Good way to get yourself killed.” Another said: “Great example to kids.”
In the 48-second clip Mizzy can be seen bum-shuffling along the edge of the roof and contemplating the jump.
As he perches near the gutter his pals can be heard shouting ‘he’s sh*tting it now, sh*tting it’.
Mizzy retorts: “I’m just debating whether to f***ing somersault or…”
Kieran says: “Somersault? Yeah right, just do it, just do it lad.”
Mizzy then leaps off the roof, hits the water and emerges shouting ‘f***ing freezing’ before walking off cradling his crotch.
Kieran said: “If there’d been any more height I would have given it another go, but that was the highest point.”