Angry Cyclist

When out cycling I sometimes come across pedestrians who walk side-by-side on the dual-use (walking and cycling) path. That irritates me a little, but they usually get out of the way when you ding your bell or yell out “bike!”. However, sometimes they just stay there and completely ignore you. It’s a dual-use, two-way path! At least move to one side so that cyclists can overtake you! I wanted some way to vent my anger without having to resort to flipping the bird. So I came up with the idea of writing "WHAT PART OF 'DING DING' DON'T YOU UNDERSTAND?" on the back of a shirt so that they know what I'm thinking as I cycle past them!