Top definition
The act of hiding, normally behind a tree or bush in/near a park and later jump out and start humping random joggers passing by.

Most Jayhumpers wear clown costumes or are dressed as bandits.
"I met him/her while Jayhumping in the park"
by kengulux February 25, 2010
Get the mug
Get a Jayhumping mug for your daughter-in-law Helena.