A hitchhiker is an item that is placed in a geocache, and has instructions to travel to other caches.
Sometimes they have logbooks attached so you can log their travels.
A Travel Bug is an example of a hitchhiker

also see stranger A hitch-hiker is where you make your hand go numb and masturbate. Similar to a stranger but done in a car.

The act of gaping a partner's rectum with the thumbs before sodomy, and thereby "looking down the dirt road for a ride."

A clingy, highly potent fart, with a sharp tang. The hitchhiker often appears at tense social gatherings and high protocol events, in which farting with discretion is mandatory at all times. One's cover is blown as the farter's poison spreads and clings to clothing and accessories, leaving a comet trail of scent behind or even advancing before the person in question, all but raising a flag of undeniable guilt. Winston Churchill was infamous for his "hitchhikers", and he used them shrewdly and strategically to gain leverage with diplomats and dignitaries. Some clairvoyants and mystics can actually see the fart shape or fart avatar of the hitchhiker as it follows its "host" around the room.

Also known as the ballroom blitz, cushion creeper, and theNatchez Ninja.

Someone you know nothing about but you become friends

another word for a tampon

Ass, grass or cash. no one rides for free