This website contains age-restricted materials including nudity and explicit depictions of sexual activity.
By entering, you affirm that you are at least 18 years of age or the age of majority in the jurisdiction you are accessing the website from and you consent to viewing sexually explicit content.
Someone else answered but yes it’s a boomer expression. Basically to mean you’re in trouble with your spouse. (They aren’t letting you in their bed so you go to sleep with your dog in the dog house.)