Gotcha!

I finally got a joke from Robot Chicken that defied viewers to understand it. The joke featured a man standing in baseball field, asking the audience, "Do you get it?" The joke lasts just as long as he can deliver his line, then cuts out. In the background, there's a sign proclaiming the name of the stadium, but it's not part of the joke. During the four seconds, you have just enough time to catch a glimpse of the man to realize he's oddly attired. He's wearing a scarf. Not just any scarf, a Dr.Who scarf. So Dr.Who's playing baseball, ego, Who's on first, which is the famous Abbot and Costello routine. The joke requires you to put together two obscure and outdated references together in the span of four seconds, which is the essence of Robot Chicken.
It's taken me well over a year to get this joke, after the seventh or eighth viewing, and I laughed for about two seconds.