Context

Muhammad Ali talked about how great he was all. the. time. Seriously. He could not stop. He was the greatest at talking about how great was.

Who thought professional boxer Muhammad Ali was the greatest? Well, he did. The self-proclaimed "greatest thing that ever lived," who often liked to speak in rhyme, not only knocked men out with his fists—he knocked them out with his words, too.

Where you've heard it

Will Smith, back when he was the greatest movie star in the world, played Ali in a 2001 film; Mike Tyson channeled Ali years later, calling himself "the best ever".

Oh, and Muhammad Ali had his own cartoon show called, what else, I Am the Greatest!

Pretentious Factor

If you were to drop this quote at a dinner party, would you get an in-unison "awww" or would everyone roll their eyes and never invite you back? Here it is, on a scale of 1-10.

You're not Muhammad Ali. You just aren't. Sorrynotsorry.