When the average person participates in an extreme sport(wakeboarding, snowboarding...) and rather than being experienced enough to do the Frontside 1080, McTwist, Backside whatever...he/she does the "Frontside 90 Faceplant". In my experience, your board rotates forward and you slam you face into whatever terrain you are working with (usually causing extreme pain and irritation). Thriling for onlookers. Not so much fun for you.
This trick is usually carried out at higher speeds.
While snowboarding, the impact of the Frontside 90 Faceplant may result in one more rotation causing you to lie on your back in agony.
Audience: "OOOooohhhh......ouch! That was a great Frontside 90 Faceplant!!"
Victim: (After swimming to catch his/her stray wakeboard with what, at this point, may or may not be a concussion) "Here, take this stupid thing. I'm done. Let me back into the boat."