ninja cyclist 

someone who operates a bicycle in dark or low light conditions with no lights or reflectors and usually wearing dark clothing. Ninja cyclists typically ride against traffic and/or on sidewalks in violation of local laws.

(after slamming on brakes) "I didnt even see that ninja cyclist blow that stop sign. I could have hit him"

ninja cyclist by Bike Man November 3, 2009

Norwegian Cyclone 

When a male lays on his back in the snow and spins his dick around like a helicopter. The female then jumps on the male while making siren noises, all of her clothes flying everywhere in the process.

During our annual family snowball fight, we encountered two ass-wipes performing a Norwegian Cyclone and the female's clothes got all over the kids. Truly a disappointing experience.

Norwegian Cyclone by LEIGHBACCA February 20, 2014

keen cyclist 

Someone that owns or once owned a bicycle but rarely (if ever) used it. They will often refer to their keenness for cycling when stepping in on a debate between motorist and cyclist to offer support to the motorist.

The keen cyclists main objective is to provide backup for motorists and tell actual cyclists they are wrong.

"As a keen cyclist myself I disagree. It’s important cyclists know how to share road with drivers."

keen cyclist by Not a keen cyclist August 12, 2021

nuisance of cyclists

A group of three or more cyclists gathering or travelling on a public road.

As used when describing a "Flock of birds", "School of fish", etc

He was late for work as he encountered a "Nuisance of cyclists" blocking the road.

nuisance of cyclists by LadyQ7 January 30, 2012

cycles 

Available time. Used in project management context.

Marketing wants to add a new feature and engineering pushed back claiming they don't have the cycles.

cycles by bkdouble October 5, 2006

Cyclops

When you are about to cum, pull out and jizz in the girl's left eye, shouting “Optic Blast” as you blind her with your powerful white laser.

"Ow! What the fuck! My eye!" she screamed.
I merely replied "Cyclops, bitch!".

Cyclops by sexinahat April 11, 2009

Cycling tan 

A tanning of the skin appearing on the neck, arms and legs of an avid cyclist. Similar to a farmers tan with some distinguishing features, caused by wearing tight fitting clothing and other cycling accessories while out riding in the sun for extended periods of time.

Tan lines on the upper arm and wrist are caused by short sleeve jersey and gloves. The body hugging Lycra shorts of roadies and XC jey boys helps to give a distinguished tan line on the lower thigh. Helmet straps and sunglasses can cause white patches on the face and jaw.

Check out that dudes cycling tan, has he been in training for the tour?

Cycling tan by tenners June 1, 2009