Quote Originally Posted by Golden Phoenix View Post
Do they explain why it was offensive?

It could simply be that the acronym that was formed came out to be something else that was just as offensive to Cybertronian. For all we know it could have come out as the Cybertronian for Screw.
I think the returned civilians find the term that the Autobots are using offensive because the Autobots are soliders using it as a derogatory slur against civilians. It's the tone and context not the actual word, just like a lot of otherwise harmless english words are used as words of hate towards people from different backgrounds, religions, orientations, etc.

And if Prowl intentionally wanted a word that was insulting he's smart enough to find a couple of Cybertronian words to form an appopriate accronym.