The rapper, who launched his career by creating mix tapes in his South Bronx neighborhood as a teen, dissed a New Yorker after borrowing the man's dog for a swanky photo shoot.
Earlier this week, the NYC banker and his gorgeous grey pit bull, Biggie Smalls, were approached by the 29-year-old rising star's management on the street.
"They asked if they could use Biggie in a photo shoot on Wednesday," the man tells RadarOnline.com. "I of course said yes."
However, when the banker arrived to the studio in NYC's Tribeca neighborhood for the shoot on July 23, Montana's handlers took the dog, but promptly shut the door on his generous owner.
"They told me French didn't want me in the studio," the man explains. "So they took the dog and I had to wait outside for a few hours until they were done."
Further insulting the dog owner, Montana didn't offer any sort of compensation for his pup's modeling gig.
"I just thought he was rude for not inviting me inside," the man tells Radar.