When you come across some unrelated psycopathic or even erotic videos or information which you had not intended to stumble upon.
Dave: Man, you should have seen this wierd video I saw last night!
Tom: What happened?
Dave: I was doing some research on the French when I clicked on this link that lead me to five guys covering eachother in nutella.
Tom: Sounds like somebody ended up in the dark corner of the internet..
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi