Done right, it might have had a chance to throw off the seemingly imperturbable Obama.

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They were invariably polite, but what was going on behind their imperturbable features?

ECONOMIST: Elizabeth Vining

The kinesthetic quality of the F12 is therefore that of a supremely civilized, well-tempered GT: easy to drive, supple, frictionless, balanced, undertaxed, impeccable, imperturbable.

WSJ: 2012 Ferrari F12 Berlinetta Review: Tech That Makes Drivers Into Gods | Rumble Seat by Dan Neil

That left only the imperturbable Lingmerth, who hit a bold tee shot to eight feet on the 17th but failed to convert for birdie or to birdie the 18th to force a playoff.

WSJ: Woods Wobbles to Win

With the imperturbable Ving Rhames.

NEWYORKER: Mission: Impossible III

From time to time he spotted a tree all alone out on the plain, and the vision struck him as poetic, as if the tree and the scenery of the deserted countryside had been arranged just for him and had been awaiting his arrival with an imperturbable patience.

NEWYORKER: The Insufferable Gaucho