I am translating a snippet from a medieval commentary on 1Corinthians. At the part where St. Paul advises the Corinthians not to marry because of the many difficulties involved, my commentator notes that Paul says
that marriage should be avoided because there are many pressing difficulties. Hence they are said to be in a millstone, Mt. 24:41. Hence in common speech it is said that marriage has a big mouth.
Excuse me? Odd proverbs making the rounds in the late middle ages. But I love the creative interpretation of Mt. 24:41!