Oh happy day! Someone's taken the time and trouble to put together a three-and-a-half-minute-long extravaganza of humans versus trampolines.
OK, some of the footage is a little grainy - but we can still pretty much get the picture. And while we do try to have sympathy with these people and hope they haven't hurt themselves too badly, we can't help thinking some of them don't help themselves. We mean... jumping off a roof on to a trampoline while holding hands with two mates and expecting nothing to go wrong. Really?
And if you enjoy being entertained by misguided fools, take a look at our super-slideshow of more recent fails...
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