I laughed at the drowning woman
If this woman is struggling, can't you help her?
Yes, but I found it very funny. She needs to die.
That woman needed your help and you shouldn't be laughing at people in distress. You should offer your help if someone needs it.
You're not understanding me, I laughed at her struggle, I was happy that I saw it and I think she should rot.
Unfortunately you've made it very clear what you mean, and what you have said is terrible. If someone is drowning, you owe it to them to try to help whenever you are able. I wouldn't want someone to laugh if you were in danger, so I hope that you will do better next time.