I've been passed by a little old lady jogger on an incline. I have bad knees that don't do hills so I forgave myself after I got over the shame lol.
I thought of this thread today when I got passed by a guy but then I chased him and stuck to his butt for 3 miles. Finally I gave up chasing him so I could breathe. It required using one gear higher than I've ever used so I was proud of myself for keeping up as long as I did.