One reason I try not to lose my shit in front of other people is I don't want to end up saying something ridiculous while in a temper.
Two of my 'favourite' ridiculous angry statements:
FIL (when annoyed at my DH): 'You shouldn't make mistakes! NEVER MAKE MISTAKES!'
Uhm - if people realised they were making a mistake, they wouldn't make it. You can't, y'know, make a decision never to make them?
DH (in a bad mood about unrelated thing, sees the cleaner has Moved a Houseplant): 'SHE'S DECIDING HOW WE LIVE OUR LIVES!'
I'm honestly not sure how I kept a straight face.