YouTube Douche 

A person who posts comments directed towards the people who voted the video Thumbs Up or Thumbs Down

YouTube Douche: 1523 People are bullies.

YouTube Douche by MadMadMax01 November 3, 2010

YouTube Douche 

A person who will post a video or comment on youtube that is douchey.

"What a YouTube Douche"

SK8ToRx900 (4 days ago)
"First C0MMENT!!!
YOU JUST GOT P0WNED!"

YouTube Douche by Y3KComingSoon July 7, 2009