1 definition by masta & commanda

A half chubbed erection, stimulated by the ever tightening jambayala that sometimes occurs while sitting down. Generally happens in a sitting situation with some subtle vibration (driving on a bumpy road) when your pants jumble up and your Weiner comes restricted and thus forms a chubby pushing against your pants.

Also known as a ponybone or a poonboon
Frig duuude you gotta stop driving so I can deal with this pony boner. Me n the Bros went offroading and I got the biiiiggest pony bone.
by masta & commanda April 29, 2015
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