If you blinked, you probably missed it.

Conor McGregor knocked out Jose Aldo in 13 seconds Saturday to win the UFC featherweight championship at UFC 194, the fastest knockout in a title fight in UFC history, according to ESPN Stats & Info.

As quickly as McGregor was able to knock out Aldo, it didn't take long for Twitter to explode into a frenzy with reactions to the title fight.

Here are some of the earliest Twitter reactions, starting with Dan Rafael of ESPN.com:

NBA on TNT analyst Shaquille O'Neal was pumped up, to say the least:

Carmichael Dave of KHTK accurately described the scene in Las Vegas right now:

Sam Vecenie of CBS Sports summarized the fight nicely:

Legendary wrestling broadcaster Jim Ross was impressed with McGregor's left-handed knockout:

It seems that @TheNotoriousMMA doesn't work by the hour....#UFC194

— Jim Ross (@JRsBBQ) December 13, 2015

Jay Glazer of Fox Sports, who is an avid MMA fan, was just as surprised as anyone else:

Phil "CM Punk" Brooks could muster up only one word:

Jon Anik from Fox Sports expressed why UFC is such a great sport:

Kings of Leon bass player Jared Followill spoke for the general public, mainly those who paid for the fight on pay-per-view:

Pop singer Nick Jonas had a short summary of McGregor's knockout:

Suspended Cleveland Browns receiver Josh Gordon also weighed in on the 13-second brawl:

"THE NOTORIOUS CONNOR MCGREGOR.. GOAT..

— Flash Gordon (@JOSH_GORDONXII) December 13, 2015

Arizona Cardinals wide receiver Larry Fitzgerald apparently picked against McGregor on Saturday night, and it turns out he picked wrong for every other fight on the card:

Fellow Irishman and WWE world heavyweight champion Sheamus showed love for his countryman:

WWE manager Paul Heyman talked about the domino effect of the crazy results that have happened this year:

UFC bantamweight star Miesha Tate said there needs to be a rematch in the near future:

This was one of the stranger fights in UFC history. All McGregor needed was one shot and it was over. If there's a rematch in the future, fans might not complain—as long as Aldo lasts longer than 13 seconds.

However, Frankie Edgar may be waiting in the wings for McGregor.