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UFC superstar Jon Jones called a police officer a "f**king liar" and a "pig" during a heated exchange in New Mexico last week ... and TMZ Sports has the footage. It all went down when Jon was pulled over in his white Corvette on suspicion of drag racing around midnight Thursday night.
The encounter was definitely heated from the beginning -- the officer making it clear he was NOT happy with Jones.
But Jon -- who is on probation from a hit and run conviction -- doesn't take kindly to the officer's tone and starts to bark back ... at one point calling him a "f*cking liar" and a "pig."
He added, "You're despicable."
The officer replied, "I feel the same way about you sir."
Jones went on "The MMA Hour" with Ariel Helwani and later apologized -- saying he was emotional and shouldn't have said what he said.
The UFC issued a statement saying, "We are aware of the situation and are looking into the matter. We've also been in touch with Jon's team regarding the matter."
The dumbass is also now cruising with an ignition interlock installed in his car