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
Person A : I don't know what's wrong with
him, but I keep on seeing him flirting with young
Person B : Maybe because he is a rorikon?
Person A : ...A what?