That there is the donut-master himself, Homer Simpson. No idea where it came from, but I think it wasn't very well known.

Symbol for "pointy" or sharp penis. Can also be written as:
8==>
8===>
and with more equals signs. More equals signs denotes more length.

an eye rolling face on msn. used for annoying situations.

The ordinal number '8' is often used in place of the phonemes that would make the sound 'ate' in written English.
I say 'often', I actually mean 'often (by bumpers)'
The habit could have originally developed among linux {fucktards in chatrooms, or 14 year old scrubbers text messaging on mobile phones. Either that or from 'old-school' rave act Altern8 (still DJ-ing in and around Stoke-on-Trent, kids!)
Whichever way you look at it, it looks shit and dosn't make you look cool.

someone with glasses and a big nose, like Groucho Marks. Possibly trying to be sneaky.

If you look at it, it looks like a small shaft of a penis and a pair of big balls

Group of people that makes one class.
Different types of Brains making fun of eachother. Their class president is always the one suffering,rip Žabi </3