@izzythepush,
'BOGS" are bodies of standing saturated soil areas mostly resulting from poor drainage of fresh water>Bogs have given rise to specific biota like "peat".
A term "swamp" is often used interchangeably with "bog" except, as the terms are contained within the Glossary of Geology, a bog does not always contain standing water, and a swamp does not always contain peat deposits.
I therefore assume its some form of UK slang regarding toilets?