Is there a penis detection demo similar to face detection?
Is there a script / tutorial / demo for penis detection?
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Fairly serious quesion, future of internet memes is at stake

Yes, there is.
Common Pattern Recognition techniques will be able to spot one even with what would be considered today &quot;traditional&quot; approach (i.e. without &quot;Deep Learning&quot;).
There already is a sub-category of the subject with people working on &quot;Adult Content Detection&quot;. Here are a few relevant publications.
This is an example for detecting child pornography which contains an overview and references to other techniques along with what the authors are proposing.
There is an increasingly large amount of tutorials out there on how to use a number of popular libraries to build an &quot;Image Classifier&quot;, some of them not even requiring writing code. So, getting to a &quot;script&quot; that does what you are after is not a huge amount of work.
Hope this helps