Thunder Biking 

A form of mountain biking performed during a thunderstorm.

The 40 mph winds, torrential downpour, and flooded roads were perfect conditions for thunder biking.

Thunder Biking by mjaumen July 13, 2012

Mountain Biking 

Yewwwwwww!!!

"lets go mountain biking!"

Mountain Biking by The123123123 February 24, 2023

Mountain Biking 

Mountain biking is a form of Sadomasochism akin to self-flagellation made publicly acceptable by claiming it is healthy

Mountain biking has knackered my knees but I feel so much better for it

Mountain Biking by Doomanic November 28, 2011

Dirt Biking

When one person lets there asshole get all disgusting and dirty, then another has butt sex with them (usually done messy)!

1) Dirt Biki- My ass feels so gross, but it will be worth it tonight when I get dirt biked!

2) Dirt Biker- Man I can't wait to go dirt biking tonight.

(friend) -Wow, thats pretty sick.

Dirt Biking by Wood9412 February 13, 2009

Mountain Biking 

Going off road on a bike without a seat but with a 12 inch plus dry seat post only.

Hey Nick, what are you up to today? Mountain Biking...I have About 13 inches on my dry seat post and I think Astroglyde wants to sponsor me. Im a real man!

Mountain Biking by Skin DIver April 7, 2022

Fountain Biking 

As a verb. To ride a bicycle through or in a water fountain, or other man-made body of water.

It was a really hot day, so I got together with some friends and went fountain biking.

Given the many park fountains, Outremont and the Plateau are excellent areas for fountain biking.

Fountain Biking by SuperMario8 September 8, 2008

Roller Biking 

The process used by one in which one would use roller blades on a bike. Similar to biking you just look like a goddamn idiot.

*Joe roller biking*
Bob: HAHAHA what a fucking idiot!
Terence: I'm videotaping this and putting it on youtube!

Roller Biking by Joe Sloe January 11, 2009