Miami Dolphins legend Mercury Morris ain't a fan of the N-word -- as in, Nixon ... Richard Nixon.
The unofficial mouthpiece for the undefeated '72 Super Bowl champs arrived in D.C. this week ... and told TMZ he’s glad his victory trip to the White House is coming 40 years after the fact -- so he doesn't have to deal with a racist President like Tricky Dick.
FYI -- The Fins never got a chance to meet the POTUS after their undefeated season because the President was dealing with some issues of his own at the time ... issues that rhyme with shmatergate.
But today, members of the team have finally been invited to 1600 Pennsylvania Ave. to get their long-awaited congratulatory handshake from the Commander In Chief ... and running back Mercury Morris is pumped.
The best part of the encounter -- we asked MM if he would rather meet Obama or Nixon, and he couldn't have been more clear ... telling us, "OH PLEASE MAN. Didn't you see the Nixon tapes? He may have called me a name man."
QUICK HISTORY LESSON -- "The Nixon Tapes” were explosive recordings in which R.N. could be heard referring to black people as ... well, do we really need to spell it out?
Of course, the '72 Fins aren't the only team to finish the regular season undefeated -- the 2007 Pats also accomplished the feat. But you won't see them at the White House anytime soon ... thanks to Eli Manning and one sticky helmet.