A few years ago, I was happily riding along a canal towpath when a stick flew through a gap in a hedge to my right, closely followed by a collie.
I came extremely close to a dip in the canal, so I told the owners that they ought to be more careful throwing sticks around.
"This is not a cycle path!" said the apparently female member of the duo, both of indeterminate age and gender with a voice ravaged by years of tobacco abuse and indignant remarks in response to provocative articles in the lower order tabloids, no doubt.
I shrugged, pointed to the sign fifteen feet away that confirmed that yes, it was indeed a cycle path and nodded to what I assumed to be the male partner "Is she always this dense?"
My point made, I happily trundled off to enjoy the towpath