Lamar Odom says his boxing match with Aaron Carter will last shorter than a TikTok video ... telling TMZ Sports he's gonna knock out the former pop star in the FIRST ROUND!!!
As we previously reported, the NBA champ has been CRUSHING it in the gym leading up to his June 12 bout with the "I Want Candy" crooner ... looking as polished as ever during training session vids.
We spoke with 41-year-old Odom ahead of the big fight in Atlantic City .