Bands like Die Kassierer (known for songs like "Das Schlimmste ist, wenn das Bier alle ist") use absurdist sexual and scatological imagery. However, even they usually stop short of explicitly violent sex acts against the homeless. The phrase is more common in amateur "demo tapes" from the early 2000s punk/hardcore scene aimed at shocking parents and venue owners.
If your aim is to educate about the German language, you might approach this by explaining the words' meanings, their usage (or misuse), and the cultural context in which they might be used. Always ensure that such content is appropriate for your audience. pissen saufen penner ficken