Did I tell you I didn't realize how deep the water was until I jumped in?
Maybe you should've check it out?
I thought for sure the water wasn't too deep.
It's always important to check and confirm your information before attempting to do something dangerous. You could be seriously injured by jumping into water like that. You should always know more about a situation before proceeding.
Yeah I should have known better.
Fortunately you came out OK from the experience. Hopefully, you've learned a good lesson.