We had a 'mental' image/picture of what we thought the house would look like.
She was worried about her son's 'mental' and physical development.
I'll make a 'mental' note to see if we can reschedule the meeting.
(..) so it was really me all along. I thought we'd be all right, you know... ...after you'd figured that out. Who...? Who could possibly figure that out? That's completely mental. Yeah. Isn't it? I suppose I was a bit distraught. Boys. - Hi, Harry. - Hi, Harry. (..)2005 Harry Potter and the Goblet of Fire