You have done the wrong thing.
It doesn't much matter what you've done. Perhaps you scribbled all over the walls. Or you didn't tidy your room. Or you punched your brother.
Whatever it is, it's pretty certain that you'll be found out. You need to act fast.
Do you:
Admit that you've done the wrong thing, say sorry, and quietly accept the consequences,
OR
Move to Step One of your Get-Me-Out-Of-Trouble plan?