The term used to describe 'making-out' while riding parallel with another biker. With reference to 'The Simpsons EP2005'.
"Hey Marge, i've thought of a new thing. It's called 'Biking Out', its a combination of Making out and Riding a bike"
by theguybrian April 6, 2009

by spokes1124 March 9, 2004

the police that patrol the city on bicycles.
If you have ever been to northampton massachusetts you know that they are all pricks.
If you have ever been to northampton massachusetts you know that they are all pricks.
by zoeee June 11, 2006

A code phrase for when your thong is wedged so far up your ass at an extremely inconvenient time that you feel an overwhelming compulsion to yell "nuns on bikes!!!" at the top of your lungs to exert your frustration of not being able to fix this unpleasant situation immediately.
While sitting in church, I leaned over and whispered "nuns on bikes" to my sister with a pained expression on my face because I felt the need to describe my predicament in a succinct manner to relieve my stress before i yelled an obscenity during the sermon.
by LJB July 13, 2006

When two guys called Dave tape their cock ends together, lubricate, and take turns stroking the afformentioned double lengthed penises until each ejaculate in each others japs eyes.
by I am Dave too January 6, 2012

tall bike is postapocaliptic horse used in jousting against riot police on horses. To free police horses. Police could use tall bike instead of misusing horses against poor demonstrants
by louis October 25, 2004

Dirt Biking is the act of having sex with a woman on all fours. While in the act, the male slips his thumb into her anus and then makes motorcyle sounds while pumping the "throttle". The time that elapses from insertion of thumb until the time you get thrown off is to be compared amung buddies.
"Hey man, the other night I dirt biked her for 54 seconds. funny thing is, she never called me back".....
by Hazyredeyes August 14, 2009
