Man cave

A man cave or manspace is a male retreat or sanctuary in a home, such as a specially equipped garage, spare bedroom, media room, den, or basement. The term "man cave" is a metaphor describing a room inside the house where "guys can do as they please" like a caveman, without fear of upsetting any female sensibility about house decor or design. Paula Aymer of Tufts University calls it the "last bastion of masculinity". The phrase is thought to come from the 1993 publication, Men Are from Mars, Women Are from Venus.