Guy trying to jump off roof into pool slips and falls to ground

The sun's out, it's hot, you're at a pool party.

For some men it's the perfect combination to inspire them to feats of silliness.

So when three guys climb onto a roof with plans to jump into the crowded swimming pool below, you can tell it's a recipe for disaster.

See what happens, if you've not already guessed, in the video above.