Rorikon means pedophile (Which is also known as "lolicon".).
The word "Rorikon" isn't English, it's Japanese, this is how it looks written in Japanese : ロリコン (You won't be able to see it, unless you have installed the Asian language pack)
If you don't know what a pedophile is : "Pedophile persons can feel an attraction to children of a different sex, to children of the same sex, or both."
Just a friendly tip, stay away from child porn.
Person A : I don't know what's wrong with him, but I keep on seeing him flirting with young girls.
Short for "Lolita Complex" in a pairing. The "lolita" is alwaysfemale, and the other member of the pairing is always older than the "lolita." The lolita is generally underage.
Person A: Did you read the Albedo/MOMO roricon?
Person B: Yeah, that was really sick...
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.