In the fifth inning, Pirates Andrew McCutchen's mashes a long ball out to the left field fences. Cardinals left fielder Matt Holliday attempts to rob McCutchen's home run, except that he doesn't. Instead he provides an assist by having the ball bounce from the heel of his glove into the stands of the Pirates faithful.
The best part is the reaction of the front row fan in the GIF above. What makes this GIF perfect is that while everyone tries to catch the bumbled ball in the stands, the gloating fan maintains his alpha demeanor by being confrontational with Holliday. Talk about kicking someone while they're down! Ahh, the beauty of baseball and its fans.