Maybe I can put some of the"fraud" rumors to rest. When I divorced, I first tried for an annulment. This is pretty common when your marriage is short-lived. Fraud is grounds for annulment, but it is extremely hard to prove. You try to come up with anything that you think will fall under these grounds. If you husband drank, you would say "I wasn't aware he drank". That is fraud. BUT. . . it never works. So then you just get the divorce and no harm, no foul. But it is always better to try for the annulment first.
Sorry. . . nothing interesting. It really is just a common term used to try for an annulment. I'm sure Kenny Chesney is not gay, was born a woman or kidnaps young girls & sells them into slavery.