I prefer awkwardsults to insults. When you're on an argumentative situation with someone, they are usually ready for insults, they know how to respond, usually with another insult. So instead of honking or yelling an insult if someone cuts you off, shake your fist at them and yell "my uncle molested me as a child!" Or nod your head with a serious and compassionate expression on your face and say "That's why I worry that you won't get reelected for city council." And just walk away, dont respond at all to them. An insult can easily be dismissed, but when you say stuff like that to a person, it throws them off their train of thought and they will be wondering about it all day.