The opposite of a Swiss Watch/ Swiss Colon. A digestive tract that could go off at any time within a 24 hour window.
That curry turned my arse from a Swiss Watch to a Norwegian Sundial.
When you have really atrocious sex and make jokes about how bad it is.
From the cult show MST3k.
Neither of them really knew what they were doing, but they soldiered on and did it MST3k Style.