Brock Holt celebrated hitting the first postseason cycle in history with the biggest smile you'll see

With his home run off position player Austin Romine in the ninth inning of the Red Sox 16-1 win over the Yankees in Game 3 of the ALDS, Red Sox infielder Brock Holt became the first player ever to hit for the cycle in the postseason. 
So, how does one celebrate a historic accomplishment in the midst of a huge win? By letting out the brightest and most infectious smile of the postseason, nay, of recent memory:

To see just how infectious Holt's smile was, just check out how quickly Dustin Pedroia got caught under its spell: 

It was good vibes all around in the Red Sox dugout and its environs, which is what a postseason cycle and a lopsided win will do.