At the ESPYs in July, Rousey was named the fighter of the year. She then took the opportunity to burn Mayweather with a jab about his history of domestic violence.
"I wonder how Floyd feels being beat by a woman for once," Rousey said at the time. "I'd like to see him pretend to not know who I am now."
Mayweather definitely knew her name Thursday in an interview with ESPN.
"I want to say congratulations to Ronda Rousey and the UFC," Mayweather said. "You guys have done a tremendous job, and I've won probably six or seven ESPYs for fighter of the year and actually believe she deserves it."
But the interviewer wouldn't let him get away with just complimenting the undefeated bantamweight champion and asked about Rousey's joke.
"I've yet to see any MMA fighter, or other boxer, make over $300 million in 36 minutes," Mayweather responded. "When she can do that, then, call me."
Mayweather famously collected that take for his heavily hyped fight with Manny Pacquiao. The 38-year-old went the distance with the boxer from the Philippines, ultimately winning by decision.
Mayweather (48-0, 26 knockouts) is preparing for what is expected to be his last fight in the ring with Andre Berto (30-3, 23 KOs) on Sept. 12 in Las Vegas.
Follow Matt Wilhalme on Twitter @mattwilhalme