E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
The British Review was nicknamed My Grandmother. In Don Juan, Lord Byron says, he bribed My Grandmothers Review, the British. The editor took this in dudgeon and gave Byron the lie, but the poet turned the laugh against the reviewer.
Am I flat, I tip My Grandmother a bit of prose.Noctes Ambrosian.