Q: Pupil of the eye as the most expansive male organ

[Joel S. Berson]

There is the riddle "What part of the male anatomy expands the most
between its smallest and its largest size?"  (meaning
percentage-wise:  largest size divided by smallest).  The answer I
heard was the pupil of the eye.  [Yes I know the female anatomy has
pupils also, but saying "male" is of course designed to point
responders in a different direction.]

Someone elsewhere tells me "it's in the screenplay of _Kinsey_ where
Liam Neeson plays it with a twinkle".  But I think I heard this long
before this movie.  Can anyone cite an earlier source?

Joel

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