LOL eagl! I had that same thing happen with a rocket that I launched from an incinerator. It was WAY too big to launch from a bottle, but the mesh which formed the bottom of the incinerator was about 12 inches off the ground and was perfect. Because of drizzle, the rocket was slightly damp, so it took off slowly, turned horizontal, and then - just as all the damp powder had been burnt off, it flew horizontally at full power across the garden, punching a hole in the neighbour's fence where it remained lodged, burning, screeching, discharging coloured balls which exploded all around us...
Those were the days. We didn't have a nanny government back then, and people didn't sue the firework maker if they got burned. Compare that with today when, under Blair's nannydom, children are adviced to wear goggles when playing conkers "in case a flying conker fragment went in someone's eye".