Today I was doing my daily ride on a MUP trail when I approached a (slow) jogger from behind. He was dead center on the trail leaving insufficient room (for me) on either side. Everyone who has read anything I've written knows that I am no speed demon. At this time I was doing about 13 mph and I started slowing. I noticed he had ear-buds in his ears. I said, loudly, "On your left" and got no reaction. On the second "On your left" he didn't react immediately then it was like a started looking around and dancing (I swear it looked like a dance step, but I'm Baptist, what do I know) to the left just as I said "On your left" and he danced to his right so I could pass safely. I thanked him as I went by and he apologized but it was no big deal. My last lap I did reverse my direction (I do that to avoid boredom) so I approached him in plain sight.