#57500: The Countess — 01/11  at  01:34 PM
How about a meme where we say nasty things about other people, and you have to guess who they are?

#57511: — 01/11  at  02:17 PM
Ø, {Ø}, {{Ø},Ø}, {{{Ø},Ø},Ø}, ...
The Natural numbers, construced from the empty set.
Or something from Nothing. And they said it couldn't be done.

#57528: Lee J Rickard — 01/11  at  04:04 PM
in words

in pictures

in music

in film

#57539: — 01/11  at  04:53 PM
零

#57540: — 01/11  at  04:57 PM
How about four personal-favorite examples of the empty set?
1. WMDs discovered in Iraq;
2. 18.5-minute gap in Nixon White House tapes;
3. Number of funerals of soldiers killed in Iraq attended by Bush or Cheney;
4. Current number of political friends of Jack Abramoff.

#57557: Keith Douglas — 01/11  at  06:54 PM
The natural number which is not the successor of any other natural number.

#57558: — 01/11  at  07:03 PM

#57572: — 01/11  at  09:22 PM
31 examples of creatio ex nihilo in this here thread. Now the creationists have an experiment to work with. ;)

#57578: — 01/11  at  10:22 PM
G W Bush

#57582: — 01/11  at  10:53 PM
All your zero are belong to us!

#57584: — 01/11  at  11:46 PM
" "

#57592: Alon Levy — 01/12  at  01:19 AM
{{{Ø},Ø},Ø} isn't the set 3, but {0, 2}. The set 3 is {0, 1, 2} = {Ø, {Ø}, {Ø, {Ø}}}. The number of Ø's in the set representation of a natural number n >= 1 is 2^(n-1).

How about a meme where we say nasty things about other people, and you have to guess who they are?

I don't think guessing is possible. If you say something like, "A sexist prick who likes trolling my blog anonymously and calling every woman who gets too uppity a man-hater," you describe about ten different people.