Porcelain Throne - What does porcelain throne mean?

Porcelain Throne is slang for "Toilet." See an example of how people use it.
A porcelain throne is a fancy name for a toilet. It comes from the porcelain material used to make toilets and the royal seat a king or queen sits on.

Spa, Royale High Wiki

Vintage Laufen Nautilus Regal Lion Porcelain Throne Toilet Water Closet, Cistern at 1stDibs

Golden porcelain throne: Inverness Wetherspoon pub toilets earn gold in Loo of the Year awards

Should I Repair or Replace My Toilet?

Of Thoughts From The Porcelain Throne – Becoming The Muse

The Dangers of the Porcelain Throne and a Squatty Potty Review

Royal Toilet Throne

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Do I need to worry about using my phone while sitting on the toilet? Experts weigh in.

Metallic Iron Throne Parody Toilet Sticker Sword Decal – Word Factory Design

Porcelain Throne Maintenance: Decoding Weird Toilet Sounds - Royalty Plumbing

In which porcelain throne do you dream of dropping your royal load? : r/midjourney

One year later but still applies😅 its really that simple #alljokes #m, Emily Vondy