hitch-biking 

hitching a sly lift on the back of a passing vehicle, such as a tractor or golf cart, when riding your bicycle.

dude, you look fresh after your 25 mile bike ride" "yeah man, i pulled some sweet hitch-biking the whole way!

hitch-biking by al-co-hol May 14, 2011

hitchhiking

To the definition above. NO! HITCHHIKING IS NOT A GAY SEX ACT YOU RETARD!
Anyway, hitchhiking is the method of transport/lifestyle in which a person or group of people stand by a major motorway and wait for a free ride. It is risky but the likelihood of being raped and chopped into tiny bits is very small and overplayed by the fear-mongering media. In my opinion.

hitchhiking around the world is a noble goal but some countries are far too dangerous for an american

hitchhiking by Hoyrakor the Bloodghast August 21, 2008

Hitchhiking Under the Big Top 

Beating off with the sheet propped over your knees resembeling the Circus Big Top

Felcher's mom no knock pop in to his room resulted in her catching him Hitchhiking Under the Big Top

Hitchhiking Under the Big Top by heynow_1 May 10, 2007

hitchhiking to the sky 

Another expression for male masturbation. This beautiful metaphore describes the movement of one's hand while performing this amusing activity.

1- Do you have something to do this sunday afternoon?

2- I'll do the laundry, call my parents and then some hitchhiking to the sky

hitchhiking to the sky by BluesRocker June 6, 2011

Hitchhiking cowgirl

When a girl is riding a guy then proceeds to stick her thumb up his ass like she’s thumbing a ride

Did you hear, Chris’s girl was riding him and then out of nowhere she gave him a hitchhiking cowgirl. He puckered his asshole so hard he about pinched her thumb off!

Hitchhiking cowgirl by Da Man! January 2, 2021

hitchhiking

when doing a girl doggstyle, the gentleman inserts his thumb in said girl's butthole

She loves hitchhiking, though I always need to wash my hands afterwards.

hitchhiking by BaroqueBill March 22, 2010

hitchhiking

when a dude is thinking of another dude while sticking his thumb up his ass.

i was hitchhiking in the shower.

hitchhiking by locksmith April 2, 2008