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After just 13 seconds, the main event at UFC 194 was already over. It might seem hard to believe, but that's how long it took Conor McGregor to knock out Jose Aldo on Saturday.

UFC fans could only react in shock. If you take a look at the tweets from the UFC community just prior to the fight, you'll see a community that was clearly excited for the heavily-hyped fight.

But that feeling disappeared in just 13 seconds.

But really, this reaction alone says it all ...

And that's a wrap on a shorter than expected UFC 194.

Thanks to Conor McGregor, UFC 194 ended quickly. (USATSI)