Conor McGregor Claims He'd Knock Out Floyd Mayweather

Conor McGregor believes he's got all the advantages in a fight with Floyd Mayweather -- power, reach and youth ... saying, "Age waits for no man!"

McGregor talked about his possible boxing career during an event in Northern Ireland on Friday -- when, of course, the topic of Mayweather came up.

"If I focus with the work ethic I have solely on the sport of boxing, there’s no telling what I could do,” McGregor said.

"I would not go in there just to show up, I’d go in there to knock [Floyd] out. That’s it. He can be hit, he’s been hit before. Age waits for no man."

"I know the size is on my side, I know the reach is on my side, I know the youth is on my side."

He continued, "There’s a lot to lose for them, so that’s why they're scrambling ... but that’s okay, I’ll leave them scrambling. I’ve got some other boxing opportunities and potential opponents in mind. Some previous Floyd opponents. They can bring in anyone in the game. We’ll see what happens."

Someone brought up boxing champ Paul Malignaggi -- who called McGregor out on social media.

Conor's response? WHO THE F**K IS THAT GUY?!!