Honestly, I have no idea why my youtube video went viral

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Please help us to find bad videos. Broken or unappropriated video content?
This vid isn't aimed at my regular subscribers. What makes a video like this one go viral: To be honest, I have no idea, do you?
Here's a bit of background on the changes I made to this video upload and the results they produced.
It wasn't the thumbnail -- because the thumbnail has not been changed since I first uploaded it.
Was it the title, which I changed from "Large RC Jet goes home in a bag" to the present (far less enticing) one.
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