Laugh with them.

I'm laughing out loud.

I also will laugh at your disaster. I will mock when calamity overtakes you

I also will laugh at your calamity I will mock when your fear cometh

So if you tell me I can do the impossible, I'll probably laugh at you.

Then Sarah denied, saying, I didn't laugh, for she was afraid. He said, No, but you did laugh.

Then Sarah denied, saying, I laughed not for she was afraid. And he said, Nay but thou didst laugh.