1.When you have a revelation on Youtube. This also usually includes watching the video over and over and quoting it when it is not appropriate.

2. Can also mean when there is a youtube video that everyone has seen except you so you finally get to watch it
1. Dude, I totally watched "Jesus is my friend" on youtube and I had a youtube-iphany.

2. Jeez I finally watched "my new haircut" and after my youtube-iphany I understand the jokes you guys were making.
by TioTom November 5, 2008
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