The state of having effectively spent enough time on the popular site, YouTube, in order to learn or acquire an idea of how to attempt some sort of skill.
1)The skill may have not been "learned," but the person may still feel that they can do it.
2)The skill may have actually been
mastered due to hours and hours of practicing and YouTubing
Friend: DUDE WE GOTTA GO FREE RUNNING! NOW!
Me: No, seriously? You don't know how.
Friend: MAN come one! I saw it on youtube, duh. It's SO easy.
Me: You're Tube-Trained eh? Ready to jump off that building right over there?
Friend: HELL YEAH. Then we can breakdance.