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Poke marathon occurs when two ppl keep poking each other back on facebook, may go on for a zillion years...
"you've been poked by a"

b -ohh i have to poke back!!
.... .... ...

"you've been poked by b"

a -oh i have to poke back! poking is fun!
"you've been poked by a"

b - =___= another poke marathon!
by goldenboy89 April 15, 2011