i am going to turn my friend in so he goes to jail.
Why? Did he commit a crime?
He never stole before and he's a decent guy.
If he hasn't done anything wrong that you know about, you shouldn't be trying to put him in jail. I don't know what your motive is, but this will backfire, and you could be arrested for making false reports.
No, I'm joking. I don't want to do this to my friend.
Well, I'm glad to see that you had no intention of actually doing this. Even if it was all a joke, if you had tried to prank your friend in this manner, you both could have gotten into a lot of trouble.