O'Flagherty never neglected the rich source of his native Irish dialect and customs, and drew upon it in many of his works.

The traditional Irish meal of a cat supper derives from the ritual, often performed on a Saturday night, of picking up a passing domestic cat near the entrance of a Chinese takeaway, placing it on the counter and saying "throw a logh o' chaps roun' that" (a request for an accompaniment of french fries).