50 Cent is back on the case of his favorite frenemy Floyd Mayweather.

In his latest -- and quickly deleted -- Instagram assault Fif uses colorful language to call Money out for getting a beard transplant.

"He took hair from his ass and put it on his face. LOL  WTF is really going on champ," 50 typed.

It's had been a minute since 50 had said anything bad about Floyd on social.  But we guess this means they aren't back to being buddies.  Here's a close look at his new beard.

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