This graphics interchange format shows two grown men playing the sport baseball.
After the pitcher throws the ball to the hitter, he swings and hits the ball in the pitcher's direction allowing him to catch it in his baseball glove, also known as a baseball mitt. After this impressive display of reflexes, the hitter who is also awestruck questions the pitcher, "did you catch that?". Replying to the hitter the pitcher responds with something along the lines of "yes I did" leaving the batter speechless.
Source: stolen from Reddit