<p>Yep. I agree with everybody else.</p>
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<p>No. You should be worried about the thing that you can control most completely and most easily: your own conduct. You should stop disrespecting this teacher. You should schedule time to talk to him, and you should say that you regret your recent bad behavior, and you are putting a stop to it immediately. Then you should follow through. Because if you stop behaving like a jackass, you won’t have to worry whether he’ll tell colleges that you’re behaving like a jackass.</p>
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<p>Isn’t this another way of saying that this is the kind of teacher who wouldn’t hesitate to be honest? Colleges should value recommendations from him, since praise would indicate that a student was actually praiseworthy.</p>