Green’s Dictionary of Slang

splodger n.1

[dial. splodge, to wade through mud]

1. a lout, a rough countryman.

[UK]Hotten Dict. of Modern Sl. etc. (2nd edn).
[UK]Hotten Sl. Dict.
[UK]Sl. Dict.
[UK]Farmer & Henley Sl. and Its Analogues.
[Aus]Stephens & O’Brien Materials for a Dict. of Aus. Sl. [unpub. ms.] 35: The vernacular has idioms such as ‘The Man from the Wire Fence,’ ‘Country bloke’ or ‘Splaw’ or ‘Splodger,’ ‘Cockle,’ ‘Squatter,’ ‘Bullock-Puncher,’ etc. all of which have served to cut ‘bushman’ out.

2. a grave-robber.

[UK]Partridge DSUE (8th edn) 1129/2: ca.1840–80.