To poke some one virtually means that you push a button on a website that says "poke". Often you would be able to poke other people.
The "poke" button is a very annoying and stupid application that can (and will) drive people crazy.
Emil pokes Andrea because Emil thinks he is cool. Andrea pokes Emil back.
For every time Emil pokes Andrea, Andrea gets more and more pissed.
At some point Andrea will rage and poke even more. Finally Emil will get so pissed he pokes Andrea for real in both her eyes so she cant see the "poke" button anymore.
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