Floyd Mayweather wants Conor McGregor to know ... I'M LITERATE, BITCH! 

After Conor mocked Floyd at news conference #2 on Wednesday, the Mayweather camp released a video to our friends at BSO showing Floyd clearly reading fight promos off a teleprompter. 

FLOYD CAN'T READ!
SHOWTIME

At one point during the promo sesh, Floyd jokes about all the illiteracy insults -- and then continues to read more promos. 

Conor wasn't the first person to accuse Floyd of not being able to read -- 50 Cent blasted him for it a few years ago.