The original Hawkle thing started in a thread about Sasuke's new nuclear powered eyes.
Someone noticed and pointed out that hawkle destroyed the "sasuke's emo tears"-scene totally. People laughed.
(B^U: The reason why people laughed was the ridiculous decision of putting a hawk going "KIIIIIIIIII~~" in the end of supposedly "emotional" scene.)
People also gladly pointed out that eagle looks quite hawk like and after a while of flaming discussion everyone just started calling it hawkle.
Then after that thread started to slow down and die someone started a new thread with >>12156672
And the rest is history(read:moar liek spam spam spam fail am I rite?)