Youtube Lost 

When watching a videos on Youtube and clicking from related video to related video until you have no idea what you originally searched.

Guy 1: "Hey man."
Guy 2: "Hey, what did you do last night?"
Guy 1: "Well, I was watching drag racing videos and eventually got Youtube lost, and ended up watching a video about how to properly breast feed..."
Guy 2: "Wow..."

Youtube Lost by Otis Finklburg January 27, 2010

Lost-In-YouTube 

When you first get on your computer, usually just to look up one specific video on YouTube that hit your thoughts randomly. After the process of watching the video you see one on the related video and a time vortex begins. Next thing that you know, you have 5 tabs open watching something on the other side of the spectrum from where you began.

Man 1: Bro, where were you last night, you said you would be by at 10!
Man 2: Sorry bro, i got Lost-In-Youtube

Lost-In-YouTube by Das B May 18, 2014

youtubelotitis 

Addiction to watching YouTube videos.

Dan: "Hey man, last night I didn't study at all dude. I started getting addicted to YouTube videos and kept watching one after the other. You know, I've decided what I want to do know for fun and possibly as a career: I want to watch all of the YouTube videos that exist."

Adam: "Sounds like you caught the youtubelotitis bug. But really- are you serious? Are you kidding me? Sorry dude, but honestly, that's impossible. At last count there were over 50,000,000 videos on that site. Even IF you really wanted to, you would never be able to watch all of them. Sorry, dude. And in any case - do you really wanna watch 10,000 Chris Crocker-type videos and their responses and about 20,000 videos of pre-teen girls talking about themselves?"

youtubelotitis by Adel7 December 28, 2007