“Think twice before you speak, and then you may be able to say something more insulting than if you spoke right out at once.”
“Think twice before you speak to a friend in need”
“Why are you such an ass?" The words came out before I could think twice."Everyone has to excel at something, right?""Well, you're doing a great job.”
“It was one of those parties where you cough twice before you speak and then decide not to say it after all.”
“They say: Think twice before you jump. I say: Jump first and then think as much as you want!”
“You might want to think twice before you try to use a man's conscience against him. It may turn out he doesn't have one.”