Mother-In-Law from Hell 1. You did NOT stand at the alter, taking vows with your Mother-In-Law. Therefore, when your Mother-In-Law gets out of line, do not delay to tell her to FUCK OFF!!! Stand up for yourself! Set your boundaries, now! Otherwise, you will only endure countless years of torture, stress, pain...and if that doesn't work, your husband should tell her to FUCK OFF!