I'm going to tell my dad he should find a real job instead of doing jack shit
Why are you going to tell your dad to get a job?
I always help him with money I don't have, I'm going to tell him to sink or swim with his own hands
You shouldn't be rude to your parents. Maybe you can ask your dad if he needs help finding a job or with motivation. This might make him more likely to make some changes.
They're adults and should be able to do it on their own.
Well, no need to be rude to people who raised you. Rudeness just shuts people out and doesn't help them get anywhere. Plus it makes you look guilty of something too for being so harsh.