You may or may not have seen the video of a dugout fight yesterday between Bryce Harper and Jonathan Papelbon of the Washington Nationals. Apparently, there was a heated discussion over Harper's lack of effort in running out a flyball, which then led to this:

Ah, very nice. Now before you conclude that these two were acting like little boys, take a look at how an actual little boy playing baseball acted during his game:

His dad is the first base coach.