I convinced a girl that you can get moon burns.
Thats funny. How did you convince her she can get moon burns?
I lied to her and she was stupid enough to believe me.
It's wrong to lie about something as silly as moonburn is possible. She's going to find out that it was a lie.
I'm hoping that she'll take some time to figure it out.
Although this sounds like a simple joke, you shouldn't take advantage of gullible people. They might trust you and if you lie to them then that could hurt their trust in you.