You-Tube Surfing 

The act of clicking on random videos on youtube, and in the end landing on a really random vid.

(Guy 1) Dude, I found a video of a cat eating a dude's shit.

(Guy 2) What? Why did you look that up?

(Guy 1) I didn't, I was just You-Tube Surfing and it came up!

You-Tube Surfing by Macca97 March 6, 2011

YouTube surfing 

When you start off watching "Ninjas" and keep watching the videos that are shown at the end of the video until you end up on "Backyard wrestling".

Greg: Man, I watched some pretty messed up backyard wrestling on youtube. Is that stuff even real?

Susan: Why were you watching backyard wrestling?

Greg: I was YouTube surfing!

YouTube surfing by PixelzlexiP June 21, 2009