I also fell for it and think it was a hilarious joke (after nearly crying and driving to work in bad mood).
And WTF is wrong with you americans, that you have to make everything political? Like calling everybody who says something you don't like "liberal" (or the other way round). I'm sure not all the pus-sies who cry just because of this little joke are liberals, just all kind of people who get offended way too easy.
On the other hand, maybe if you are a republican, you have to call out the libs at every occasion, because otherwise you could not stand the cognitive dissonance when think about the fact that this simple minded, narcissistic guy is "your" president.