Don't worry, you don't sound stupid.
Yes, Hetalia is an anime. It is based off a web comic(or web manga, whatever floats your boat) by Hidekaz Himaruya. Each episode is about 5 minutes long and contains various skits. The characters are all personifications of countries, mostly during World War II.
All in all, Hetalia is a short, fun little anime and, in my opinion, totally worth getting into. It doesn't take long to watch either, with the 5 minute run time and all.
I will say it is prejudice, but nothing insulting, just a bit of fun
Well, that was a long explanations. Hope this helped