DON'T HATE ME ... Hate Nelly!:50 Cent Speaks Dirty To Mayweather

Wow....it seem the battle of words between these two is far from over as they just fired at each other again.

50 Cent has fired heavily at Floyd Mayweather -- YOU SHOULD HATE NELLY'S GUTS ....
claiming the rapper banged TWO of Floyd's chicks.

See report according to TMZ:

50 just posted a video online -- saying he heard that Floyd talked smack about 3 rappers ... 50, T.I. and Nelly.

Truth is ... Floyd did address certain rappers he's beefing with during an interview with MLive.com -- but didn't mention 50 by name.

He implied that all 3 guys were irrelevant -- saying, "Hip-hop artists, they come and go. They come and go. But I'm still here."

So, 50's response? "Woke up. I look at the computer ... the computer say 'Floyd said f**k T.I., f**k 50, f**k Nelly.'" "I'm like what he say f**k me for? Nelly f**ked your first baby mama Melissa. Then took your f**ing fiance. [You should] say f**k that n**ga!" 

FYI -- Nelly is currently dating Shantel Jackson ... who broke up with Floyd earlier this year.