• supersoaker full of petrol and a lighter. it's the only way.

    Petrol vapour can explode, so this may be a bad idea. As a child however I had excellent results with a water-AK47 filled with white spirit, with a stick taped to it with a metal puncture repair kit tin at the end containing a lit white spirit soaked rag. The stream ignited as it passed over the rag.

    I got a flame of about 2 meters, the downside being that the nozzle of the water pistol kept catching fire and eventually melted shut.

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