So downvoting a bot gets you downvoted? WTF is that?

I made a post with a video about a guy backing into my car.
The very first reply to it was a damn bot saying, "What's the difference between my ex and the Titanic? The Titanic only went down on 1,000 people."
I've seen multiple variations of this kind of reply. And they happen instantly.
So I downvoted it, because bot replies are crap. Period. I even replied stating why I did it.

I come back 5 minutes later and my original post and my reply to the bot were both downvoted.

This is bullshit. Sorry, but it is. #KEEPSTEEMITCLEAN !!!!

Help me out here, folks. Please.
https://steemit.com/funny/@winstonwolfe/some-guy-backed-into-my-car-video