My time in amateur dramatics was perhaps one of the most fun-filled periods of my life.
For several years I, my closest friends and many aquaintances spent much of our time planning, preparing, and rehearsing new amdram projects and laughing about those that had gone before.
Great fun was had by all, especially over the things that went wrong, and they were plentiful! Most cock-ups were entirely accidental but a few arose from practical jokes that misfired.
On one memorable occasion, which could so easily have turned into a major disaster, a cast member took leave of his senses and did something really stupid!
Our shows always took place in the badminton hall, which was part of our large old wooden two-storey sports pavilion. The wooden stage was always built specially for the occasion (by me and one other), and draped with someone's discarded lounge curtains etc.
A fire hazard if ever there was one!!
During a live performance, where one of the men on stage was dressed as a Hawaian Hula-Hula girl, the audience fell about laughing as an arm apeared though the back curtain, struck up a cigarette lighter and set fire to his grass skirt!!
Hilarity turned to mild panic as all hell broke out on stage and the audience realised this was NOT PART OF THE ACT!!
Fortunately the grass skirt was whipped off and stamped out before the whole place went up in flames. The sketch then continued with the "hula-hula girl" standing in his charred underpants.
Don't try this at home kids!! 
la_spice
No risk assessments those days!!!!
Great memory though