I once had a gang of the local 14-15 year old gangstas/soljas give me a load of sh1t as I rode my hybrid into South Norwood Country Park; the jeering, patois swearing, running at me with flailing arms kind of stuff. One of the youngest members of the posse, rather disturbingly, fashioned his hand and fingers into a pistol grip and made as if to blow my head off.
However, so eager was the would-be shootist to draw a bead on me that he hadn't noticed that my left leg was off the pedal and was reaching out, almost in the perpendicular. Imagine his surprise as it launched him.
Of course, lots more sweary patois ensued, and a bit of a chase, but I was away down the track in no time, big brave me, hee hee