Watch out with that or watch out for that?

[ROBINDESBOIS]

Which one is correct.?

[Rusty]

Which one is correct?Both are correct, but don't necessarily mean the same thing.
They can mean the same thing if you're warning a person about something they aren't doing yet. If the person is doing something that you're trying to warn him about, the first advice is used.
The second advice is taken to mean a future event.