(1) 'I can't stand' is an idiom. We often use it out of frustration: I can't stand waiting in lines. Question: 'Why did you run that red light? -I can't stand being late. Vs: I moved my seat abruptly because 'I can't stand the smoke (blowing straight into my face).' You used it to explain your actions at the moment. (3) The guy who you know least of all (of them) is him. The guy who you know l