Never Introduce Your Donah To A Pal

There are other proverbs fully as wise as the one which Mortimer had translated from the Swahili, and one of the wisest is that quaint old East London saying, handed down from one generation of costermongers to another, and whispered at midnight in the wigwams of the whelk–sellers: 'Never introduce your donah to a pal'. In those seven words is contained the wisdom of the ages.

The Clicking of Cuthbert. 3 A Mixed Threesome