Best definition
Youtube Journey
To click from link to link on Youtube, and going on a journey of increasing randomness and declining taste, leaving

you in a very wrong place indeed in under 6 clicks.

I went on a YouTube Journey. I was looking at the new Ford and 3 clicks later I’m watching a man disembowling some animal.
Youtube Journey: define #2
YouTube Journey
When you search for a video on YouTube and let it’s auto play function do the rest. Within a few videos time you can be watching something of a completely different genre
Person A: What music shall we listen to?

Person B: Search for Metallica and go on a YouTube Journey