Youtube Algorithm

Term that describes the situation in which you end up viewing an old or random video (or both) recommended by Youtube; like midgets racing against a camel or two drums and a cymbal joke.

Upon entering the comment box, its usual to encounter users pointing out that youtube recommended the video to them, hence confirming the definition.

Person A: So, have you seen this dude?
Person B: Wtf, how have you found that?
Person A: Its the Youtube Algorithm