Last night, the Pittsburgh Pirates and the Atlanta Braves played a baseball game that went until something like 2 in the morning Eastern time.  In the nineteenth inning, the game was tied when an Atlantan player scored on a blown call at home plate, ending the game.  The umpire, Jerry Meals, declared the runner safe at home despite the fact that the replays show the runner being out.

Baseball fans turned this into a Twitter joke, where one writes something obviously unsafe but assures everyone that, well, #jerrymealssaysitssafe.  For instance:

Heading to bed now, but first I want to give all of you my debit card PIN number. #JerryMealsSaysItsSafe (from @JamesSantelli)

The jokes were sufficiently common that #jerrymealssaysitssafe popped up on the Twitter Trending Topics this morning. That led me to wonder who was tweeting about it. Was it only disgusted Pirates fans? Did Braves fans get in on it, too, to either soften or strengthen the blow to Pirates fans? Or was it just people who liked baseball, regardless of where they were?

So I looked up #jerrymealssaysitssafe on SeeTweet and got this map. Pittsburgh and its surrounding areas are obviously really prominent, but it doesn’t look like Atlanta got any more into it than other major Eastern cities, like New York or Boston. The West Coast hasn’t really gotten into it yet, but this map is from 9am Pacific time, so that’s not too surprising. My conclusion is that the rise of #jerrymealssaysitssafe was driven by Pirates fans (not Braves fans) and then picked up by other teams’ fans.