To preface anything I talk about in this blog, you need to watch this video.
The utter recklessness of this video embodies the term “Send it.” There is no going back, you’re hucking and praying, (another ski term meaning you’re just going to try the trick and probably eat it) and doing so for the entertainment of the crew.
Where does the term “Send It” come from?

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In rock climbing, a send is a run in which a climber completes a route without falling or resting. To send is to complete such a run. The term—said to originate in climbing slang in the 1990s and possibly inspired by the notion of sending as “delivering” on a promise—spread to snowboarding, skiing, mountain-biking, and skateboarding. In these extreme sports, to send is to perform a run cleanly and flawlessly.

For the high-octane snowboarder or skier, going full send is like grabbing the bull by its horns, launching confidently into a run even if it means crashing spectacularly. This expression is evidenced by at least 2015.NORTHEASTRIDERS@NortheastRiders
@kianmalone23 Mute Full Send :: #N3R #sendit #snowboarding #shr3d
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One skier, Colton Hardy, helped popularize full send through his social media (@jerryoftheday) in 2015. Hardy took to using full send for doing something hardcore—especially when sharing clips of people wiping out.Jerry of the Day@jerryoftheday
When you a dog but Full Send is life #spiritanimal #pointem
->(http://www.jerryoftheday.net )<-
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What seems to have really pushed full send over the edge, as it were, were viral videos from early 2017 of a Canadian man, Larry Enticer, performing jumps on a snowmobile—and wiping out. In the videos and when sharing them on social media, Enticer often used send it before inevitably crashing.Larry Enticer@LarryEnticer
WhEn ShEs nOT sUre If She WAntS tO seNd YoU NudEs
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Thanks to the popularity of Enticer’s videos and his send it catchphrase, full send spread outside of extreme sports as a comment on reckless stunts that end in (usually humorous) failure.
Full Send @ Beer Olympics Yesterday pic.twitter.com/bNbjs5M0P4