Nice meme! About to get pretty sweaty here lol. In the original version of Episode IV: A New Hope, Han Solo simply shot and killed Greedo outright without Greedo firing. When George Lucas released the special editions of the original trilogy in 1997, he edited the scene. As a result, Greedo shoots at Han first and misses at point blank range before being shot by Han. Subsequent to that, the Original Trilogy has been altered twice more with the latest change being the Blu-Ray release. The scene was again changed so that Han and Greedo pretty much simultaneously shoot at each other but it's still a bit silly. I personally don't really care but 20 years later this change is still controversial. George Lucas has even trolled people wearing a "Han shot first" shirt lol.