4:18 PM PT -- The Rock is so FIRED UP about presenting the UFC's "BMF" belt at UFC 244 this weekend ... he busted out his signature catchphrase right before the weigh-in.
DO YA SMELLLLLLL WHAT THE ROCK IS COOKIN?!?
Yeah, it was awesome!!!
Of course, Dwayne Johnson will present the belt to the winner of the fight -- and at the weigh-in on Friday, you could feel the electricity in the room.
Diaz is ready. Masvidal is ready. This is gonna be great!!!
Here it is ... the official "Baddest Mother F**ker" belt!