Hussainattari,
Yes, they are talking about ARRSE.
It is an interesting forum, but rough on Indians.
It is like walking at midnight in some dark lane in Harlem. You end up by being mugged whether you like it or not.
Happy with Pakistanis though and anything that is not to their liking is racist.
Can't blame them actually since we are not too aware of how the term is applied there.
Yet, it is a site where you can learn new colloquialisms including some not quite above board as per our sensibilities, but par on the course for them.
There are of course some very well read and intelligent posters out there to include gentlemen, so don't get me wrong.
Bushmill and Busterdog are two that come to mind and there are more, even if my memory fails me.