Here's the joke about Nate Freiman: He's tall. That's it. That's the joke. But what a joke! Because he's really, really tall! Think of a tall person. He's even taller than that.
And apparently that makes for good GIFs. Here's Freiman next to Jose Altuve, who is noted for being not-tall. And here's Andres Torres trying to see who has the baseball, but being thwarted by Nate Freiman, tall baseball player.
The best part might be that Roberto Kelly has to point in the general direction of the pitcher. After the Freiman eclipse passed, everything was out of sorts. Kelly got them back on track.