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Steamed Hams is the new Aristocrats joke
(lemm.ee)
A "Showerthought" is a simple term used to describe the thoughts that pop into your head while you're doing everyday things like taking a shower, driving, or just daydreaming. The best ones are thoughts that many people can relate to and they find something funny or interesting in regular stuff.
It's the opposite, really.
Steamed Hams is a sketch that's so comedically perfect on a conceptual level that it works no matter how it's executed.
The Aristocrats joke is a horrifically tasteless, bad joke, and the challenge is to make it funny anyway in your own style.