I think try and come up with coping skills/phrases to say. "You know what - my first answer is rarely my best one. Can I mull it over and get back to you by [e

I think try and come up with coping skills/phrases to say. "You know what - my first answer is rarely my best one. Can I mull it over and get back to you by [end of day/tomorrow morning/next Monday]?" This is for questions in meetings. Actual arguments might be harder.