From Wiktionary, the free dictionary
dog and maggot (uncountable)
- (UK, military, slang, dated, derogatory) Cheese and crackers.
2009, Alan Weeks, Tea, Rum & Fags: Sustaining Tommy, 1914-18, page 8:[…] a bit of fried bacon for his breakfast, some 'dog and maggot' (biscuit and cheese) for his dinner, and 'rooty' and 'pozzy' (bread and jam) for his tea.
