Green’s Dictionary of Slang

1. the vagina (in a state of sexual excitement).

1680

M. Stevenson Wits Paraphras’d 85: Quoth I, I fancy this Fop-Doodle / Wou’d fain be dabling in my puddle.

2. (also big puddle) the sea, esp. the Atlantic Ocean; thus this/the other side of the puddle, the UK or the US.

1889		Ally Sloper’s Half-Holiday 6 July 214/2: There seems to be no end to the chaff which the downy dandies across the puddle have to bear [F&H].
1899		C.J.C. Hyne Further Adventures of Captain Kettle 109: He threw himself down on the warm white sand [...] ‘You are a decent old puddle,’ he murmured.
1926		Wood & Goddard Dict. Amer. Sl. 6: big pond or puddle. The Atlantic Ocean.
1941		‘Digg Mee’ ‘Observation Post’ in N.Y. Age 21 June 9/4: The Martian muddle across the Atlantic puddle.