I recently found this in a book publishers blog comments. It was made by a reader and not the blog author:

I am a gluten for punishment.

In case you’re unsure, it should read “I am a glutton for punishment.” Thank you, dictionary.com, for telling us that gluten is a “tough, viscid, nitrogenous substance remaining when the flour of wheat or other grain is washed to remove the starch.”

Knowledge is power!