I don't know how or why, but the little bloke that used to ride by us on his pale blue motor scooter whilst we walked to school became known as "Frank the Bummer Man". As far as we knew, this meant that he liked rubbing bottoms with young boys. Anyway, this all led to us shouting "Frank the Bummer Man!" at him in very loud voices as he rode by.
One day, this became too much for Frank - if that was indeed his name - and he dismounted very rapidly and gave chase.
We ended up over the clay pits near the school, covered in mud, and eventually turned up for school over an hour late, receiving detentions for our trouble.
After that we left Frank alone as he'd shown us that being a bummer man didn't mean that he couldn't run after us.