There used to be nothing so much fun as encountering Harleys on the steep hill on the way to the cottage. They'd see me coming up in the mirror and I'd see them wind the throttle open. All that did was increase the noise a bit. I'd slide up beside them and hold up 5 fingers, then point to the engine; downshift and hold up 4, downshift and hold up 3, downshift and hold up 2. In some cases I could get to one finger. Although they often held up one finger, I could tell they were exaggerating as they hadn't shifted down. ;-)
Oh gawd - I went back through this thread and found your post Norm - and I cannot stop laughing. I had virtually the same experience in about 1982 while on my '79 GS850G upon coming up on a Hogley Ferguson thundering along in all its majesty. All he could do was process gasoline into noise as I smoothly marched up the hill past him.