Examples:

• Woman's a doormat in search of a door.
• The doormat always slides in when you open the door.
• She left her on my doormat after a one-night stand.
• A slightly larger doormat, we were there with snow.
• Don't let her treat you like a doormat.
• If you don't fight back, they make you into a doormat.
• The article is surrounded by a decorative rubber border (doormat).
• I'm always the doormat, but not this time.
• I bet she's got one for you, too... "doormat."
• She must be a good doormat for you.