Last night I was running near Humboldt Park in Chicago, which is a pretty rough neighborhood. A couple high school age kids waiting at the bus stop started doing the running-along-side with exaggerated running form thing. Usually I ignore it when kids do that or say anything, but for some reason I didn't feel like taking any s***, so I told them that they were hilarious and then told them to "Shut the f*** up." Don't think they were expecting that from the skinny white kid, cuz then they stopped running alongside me and actually did shut the f*** up.
Not nearly as good a story as some on here, but it felt pretty good to say something back to those morons. And they had no comeback! Ha!
Next time I think I might say something along the lines of, "Oh yeah? Well, you're poor."