“My brain is open,” the man at the door said.
He was a queer-looking fellow, fifty years old, sixty perhaps, in a shabby brown overcoat, carrying nothing but a tatty suitcase. After ringing the doorbell once, without anyone answering, he had rung once more and after that – in sequential order – two times, three, five and eight, until Heinrich had begrudgingly opened the door in his pyjamas.
“My brain is open,” the man repeated.
Read the rest of the tale and 100 more stories in 300 words or less in YOU’RE GETTING SLEEPY, THE HYPNOTIST’S APPRENTICE YAWNED.
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300 stories 
That was really awesome. I love the weird math stuff 🙂
Very cool. Thank you!
I read this and thought something seems familiar. A quick google and I realised I knew the name. Paul actually did turn up at people’s houses and say my brain is open! Brilliantly written 🙂
Yeah, he must have been quite the character, Paul Erdös 🙂
Oh I love that this is based off a real person, yet another case when life is stranger than fiction, what a brilliant character! Great story
Very imaginative..
Reblogged this on poohloversunite.
I hope you haven’t a copyright on the phrase “my brain is open” as I may have to start saying that! Love the creativity of your writing. I would be interested in reading more about this character.
[…] 230. My brain is open. […]
huh this is really cool =D
like your writing. just learned what flash fiction is.
Great story and I have to say I’m impressed with your dedication, determination and/or insanity for trying to write 300.
It’s defnitely the insanity 😉