Diddy Told UCLA Coach ... 'I'm Gonna F**k You Up'

Diddy's alleged terrorist threat involved a bomb ... an f-bomb ... with sources telling TMZ Sports the rap mogul threatened to "f**k up" the UCLA strength coach during their office fight.
Law enforcement sources tell us ... after Diddy swung a kettlebell at strength and conditioning coach Sal Alosi, he allegedly screamed out that he was "going to f**k him up."
Prosecutors believe the comments amounted to a "terrorist threat" -- so that's why he was hit with the charge in addition to 3 counts of assault with a deadly weapon.
As far as the case goes, one insider tells us important UCLA officials met this morning and we're told "charges will most likely be dropped but [Diddy] won't be allowed on the field anymore."