That's what I thought [jon]. His contemporaries, tired of Pierre's constant boastful and condescending margin annotations, could have bought him this for Christmas with a small card that simply read, "Prove it."

Yeah, if he had a proof of his theorem, why didn't he just write "see proof", instead of "I have discovered a truly wonderful proof" which does nothing but draw attention to himself.

I don't know if it's relevant here, but I've got a few proofs banging around, all of which are quite astounding. I'd show them to you, but unfortunately they’ve all got far too many squiggly characters to fit into this annotation.

That is a crying shame, [tom]. I do love astounding proofs.
And before you say it, I don't mean creeping up behind a proof and surprising it by conducting a full nude orchestra playing Beethoven's 5th, levitating above the original and otherwise lost manuscript of Homer's The Dionyssey, which is nestled on a bed of impossibly large ferrero rochet. All this whilst surreptitiously inserting him into a Klein bottle from which it is simultaneously impossible to either enter or escape.

Given that there are a number of simple, small, elegant, and wrong proofs of the theorem, I suspect Fermat actually came up with one of those, wrote the famous annotation then wrote the proof on another sheet, realized it was wrong, and tore up the flase proof in a fit of pique, forgetting to change the annotation.

That, or he just wanted to confuse the generations.

//conducting a full nude orchestra playing Beethoven's 5th, levitating above the original and otherwise lost manuscript of Homer's The Dionyssey, which is nestled on a bed of impossibly large ferrero rochet. All this whilst surreptitiously inserting him into a Klein bottle from which it is simultaneously impossible to either enter or escape....//

Oh, I've astounded my proofs. I have asounded them far beyond your feeble imagination could even comprehend. My proof were so surprised that they turned right back into theories. One was so shocked it became nothing more than a notion. See, what I did was... hey look! You misspelled "else." Hee! Hee! Well, gotta go.

Lucky for me I cut and pasted your foolish mistake to my computer in case you did that very thing of trying to fake your superiority and make me look foolish. But I have proof, see?...

//You tell me [Spoon], how esle have you astounded your proofs?//

By the way, it is notarized by an official notary but it's in the margin and due to the limitations of this web page you won't be able to see it. However, it will be on display at my local library for two weeks in the center display case for all to witness. Strange, isn't it? How it all goes back to the idea in the beginning? It's like some kind of marginal karma or something.

If Fermat had lived in another time, he could have written "Cuius rei demonstrationem mirabilem sane detexi. Hanc computatrum exiguitas non caperet." in MathCAD, but then not had enough disk space to save it.

Likewise, [spoon], I read [theleopard]'s rather creative method of astonishment and wondered about coming back with, "You misspelled rocher!" I won't, though; it would detract from his annotation.

I have proved Fermat's last theorem using a very powerful computer. It's a rather inelegant proof requiring 30,000 lines of code, and many mathematicians regard it as only 99.9% certain due to the possibility of an error in the code. My margin of error on this proof is therefore 0.1%.

I'm atrocious at Canasta, I imagine... I'm just bitter that you managed to depict a (well, perhaps not beautiful) vista with your words and I couldn't. Anyway, if I could have one of those massive ferrero rochers, I'd be happy to stop nitpicking forever?

I think [4whom] was just cheesing me, I having berated other 'bakers for posting ideas that essentially propose making something that is widely known to exist a bit bigger, which is basically what I have done here. Although not quite.

If I'm not mistaken, Fermat's margin was indeed entirely repleted.

Yes it was often replete with taunts (as your ideas are often replete with buns). He could usually back up these taunts, with a following letter detailing the proof. This particular one caught him on the back foot, well below the knee, and on middle stump.