That is exactly how I would describe how I discovered a way to insert a YouTube video into a Google Doc, a happy accident.
Now I doubt if I am the only Google Apps user that knows about this, but after searching through many Google & YouTube search results, I haven't come across anything that describes or shows these steps of inserting a YouTube video into a Google Doc. So maybe I am?
I made a screencast video and embedded it below to show you the steps to take if you want to insert a YouTube video into a Google Doc.
I did run into a little snag when it came to sharing the document with others. As far as I can tell, recipients need to have edit access to the document in order to double click the Drawing. So to avoid a potential mess you could either share the Doc as view only and File --> Make a Copy, share a copy with each student in Classroom, or use the force Make a Copy hack.I will echo his suggestions and if you are using this workaround as a teacher the obvious choice is to use Google Classroom and select "make a copy for each student".
Christopher even provided a link to these instructions of how to execute the force Make a Copy hack. Its a great trick to know and can be used with all Google Apps. I use it all the time! Thanks again Christopher!