I came across a dictionary of some commuter slang, these are a few of my favorites. I may fall into a few of these titles myself.
Annoying Samaritan: Motorized human that cedes right of way to a cyclist when said right of way should not be ceded. The annoying Samaritan does not please the cyclist, who was fully prepared to wait his turn, but rather annoys other motorized humans who direct their ire at the cyclist.
Bike Salmon: This is when a rider "swims up stream" by riding the wrong way down a one way street.
Cliptastrophy: When someone riding with clipless pedals either cannot click in or click out.
Drive By Baptism: the splash coming from motor vehicles that hits cyclists.
Felon Bars: Traditional Drop Bars that have been reversed bull-horn-style on an ancient ten-speed being ridden by an individual who is obviously cycling because he is not allowed to drive any longer.
Hummer: This is the rider who is seriously into off-road weekend riding and decides to commute on a dual suspension downhill bike with 2.5 inch wide tires with huge knobbies on them. You typically can hear this rider coming because of the hum of the knobbie tires on the pavement. Sometimes this rider will replace the huge downhill tires with narrow slicks and the bike will look extremely out of proportion because of this - then I guess you could call the rider "Slick."
Organ Donor: Helmet-less rider who cruises stop signs and red lights, requiring cross traffic to slow or stop.
Orphan: a small child in a helmet, often riding on a tag-along or in a trailer, and always in the company of an Organ Donor.
Racing Stripes: seen on wet days, the line of mud/rain spatter up a rider's back whose bike lacks fenders.
Tin Man: This is a person riding a bike that is crying out in agony for lubricant.
See more at: http://www.bikehacks.com/bikehacks/2010/03/dictionary-of-bike-commuter-slang.html