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2.
When two people lay down in the act of having crazy, wiggly, giggly sex in full body contact.
Don't hate on minivans...you can still go prone in a minivan!

beast with two backs the nasty horizontal mambo
by blockhouse September 14, 2010
 
1.
- adjective
1. One who is naturally inclined to recording day-to-day activities with a GoPro camera - whether washing dishes, parasailing, knitting or race car drifting.
Bob is more GoProne than Billy. I just watched a GoPro video on YouTube of him considering the "Buy 1 Get 1 Free" deal in the Ice Cream aisle.
by MissMaiTai January 14, 2011