Erika was published in 1938 though it was probably written sometime around 1930 (for context adolf hitler came to power in 1933). The rest of this video is 100% satire. The singer who is supposed to be a soldier compares a flower, called 'erika' in german, to the genital of his girlfriend, also named erika.
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I'm going to date you.
There has recently been a heated discussion in a different subreddit about.
It was used extensively during nazi events and was likely. Is the german erika song a nazi song, or could it be considered independent of the nazi regime? That's 100% true according to erika.