Kanye West fires back at Kim Kardashian's ex, calls him a girl: Trashiest celeb feud?

Ah, the battle of the beaus. It's a classic feud to begin with, but it's way more juicy when you add celebrity names to the mix. Kanye West finally fired back at Kim Kardashian's ex Ray J during an appearance on "Jimmy Fallon" this week.

SODAHEAD SLIDESHOW: Trashiest celeb feuds of all time

Performing his song "Bound 2" during the show, Kanye rapped "Brandy's little sister lame man he know it now / When a real brother hold you down you 'sposed to drown."

Just in case you're confused, Kanye is referring to Ray J -- singer Brandy's little brother -- as a girl in the rap. Real mature, Yeezie.

But actually, this time, it was Ray J who threw the first punch. Kim K's ex and sex tape co-star recently released a song titled "I Hit It First" -- and the music video makes no question about who the song is about.

So does this Kanye / Ray J beef compare with other celeb feuds in the past? We can think of a handful of other trashy celeb feuds: Nicki Minaj and Mariah Carey, Drake and Chris Brown, Rosie O'Donnel and Donald Trump to name a few.

What do you think has been the trashiest celeb feud to date?