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An inline skating trick that extends the knee slide where you wrist guards hit the ground and you put you head down and scrape the top of your helmet.
which sort of looks like the pope kissing the ground.
One: Man that guy just stacked baddly.
Two: Nah it was a pope slide.
One: He's not getting up.
Two: OK he stacked it.
by Mark Broadhurst June 15, 2004