Someone is autoblogging and copy my post

The gave me a link, however, the content is exactly the same.

Will I get hit with duplicate content penalties? Is there anything I can do? Don't worry, haha, I am new to this.

If you want, you could send an abuse message to their hosting provider.

Or, if you want to spare a fellow blackhatter, don't do anything. If they keep autoblogging off your site, then I'd contact their host. I wouldn't worry if it's just one post.