Traditional Nickname in the Royal Navy & Royal Marines given to anyone with the surname MOORE after
George Washington "Pony" Moore (1820-1909)
'Pony' Moore ran the Magpie Music Hall (Battersea) and later formed the Moore and Burgess Minstrels (an offshoot of the Christy Minstrels and very famous in the mid-19th century) He was the father of 'Charlie' Mitchell - Heavyweight boxer and the greatest Barroom fighter of the 19th Century.
Pony Moore was a well known sporting character who allegedly always bet in "ponies" (betting slang for a sum of £25).
"Does Pony want anything from the NAAFI? He's on Dog Watch tonight so could probably do with a bit of Nutty"