Annoying kids who sit on the ramps of skateparks (normally in big groups) just to make sure that no one else can use them.
These
people are wastes of space and do not contribute to society, if you see one at your local skatepark, you should do a rock to fakie over the coping
bar where they are sitting and crush their nuts. If you are using a BMX, you could put their
head through your handlebars and do a barspin to snap their stupid necks.