"Hans get ze flammenwerfer" is a textual meme that became popular on 9gag in early 2017. It's used when the author of a comment/post wants something to be destroyed in this post. This thing can be anything : a trend, an object, an animal etc.
Post :*Picture of spiders*
Comment : Hans getze flammenwerfer
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.