Mr Portman seems unembarrassed about coming over as a sobersides with a head for numbers.
From the economist.com
Another spendthrift, Viktor Gerashchenko, the central-bank chief, has also become something of a sobersides.
From the economist.com
Los Angeles always makes me feel like a little brown wren, a sobersides, a woman from an especially poky Anita Brookner novel.
From the theatlantic.com
She may not be able to win the presidency herself, but so long as she stays in the headlines, hinting at a run, she makes the party's sobersides look dull by comparison.