I've been stung five times by bees, so I'm very wary of of them. Imagine my terror when a black and yellow two inch big-un made it's way to me. I was freaked out because
1. I have never seen a bee that big and
2. I couldn't identify the damn thing. It wasn't a yellow jacket, or a bumblebee.
After I calmed down, I googled it, and now I'm happy that it may not have been a bee at all.
Hummingbird moth(accounts for the size, buzzing, and weird wings. Or I could be lying to myself, and it really was a huge bee.