In Annie Hall, Woody Allen quips that he wasn’t accepted into the army because he was classfied as “4P” which prompts the interviewer and audience to laugh.
What did he mean? What does “4P” mean?
I tried looking it up, but could not find anything that seems to fit. Wikipedia shows a few options, none of which seem to apply. Acronym Finder seemed promising for a moment, but that only applies to the New Zealand military. Google has a small handful of references to this quotation from the movie, but none actually explain what it means.