Kanye West fires back at Ray J after all this while

Ever since Ray J's "attention seeking" track "I hit it first" , which we all know was aimed at Kanye and Kim K, I have since been waiting for +Kanye West to respond or something. Five whole months late Mr Yesus decides to fire back! LOL why five months  .. Who does that ??

In a performance of his single Bound 2 on Jimmy Fallon last night Kanye West changed the first line of the song and sang, 

"Brandy little sister lame and he know it now. When a real brother hold you down, you ‘sposed to drown"

But why bother respond now? although that diss must have pricked his ego ... "Brandy little sister" lol... watch the video below .. (diss is From the 0.33mark)