It was a tradition in our house to have a fry up or mixed grill on Satrudays. It was my dad's tradition. Our version featured egg, sausage, bacon, fat bread (as my dad called it ie fried white bread), black pudding, egg and beans (done in the frying pan after the bacon and sausage.
Bonhoeffer uses a similar phrase 'worldly Christianity'. It's J Gresham Machen that I want to line up most closely with. See his Christianity and culture here. Having done commentaries on Proverbs (Heavenly Wisdom) and Song of Songs (Heavenly Love), a matching title for Ecclesiastes would be Heavenly Worldliness. For my stance on worldliness, see 3 posts here.