buttock-clenching

British  

adjective

1. informal  making one tighten the buttocks through extreme fear or embarrassment

   buttock-clenching embarrassment

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Example Sentences

It also includes a buttock-clenching chapter called “How To Have Sex With Your Husband of Fifteen Years”: “Kick the flowered quilt off the bed… reach into his boxer shorts… don’t think about the back of your left leg, where you recently spotted a single, squiggling varicose vein…” It goes on for six pages.

From The Guardian

A blend of financial laboratory, corporate labyrinth and buttock-clenching thrill ride, Musk Inc has pushed the boundary of what was thought possible.

From Economist

As Sonam sleeps — inexplicably, given the buttock-clenching road — I battle with the urge to write down every one of the endlessly entertaining road-safety warning signs that you find disseminated by the military throughout India’s Himalayas.

From Washington Post

As Sonam sleeps — inexplicably, given the buttock-clenching road — I battle with the urge to write down every one of the endlessly entertaining road-safety warning signs that you find disseminated by the military throughout India’s Himalayas.

From Washington Post

It doesn't really matter though; it's still bloody good fun, a buttock-clenching roller-coaster.

From The Guardian