Ramparts

[Sarah]

The part of his body with which a man rams a lovely lady.

[Marquetta]

A word that can now be used to mark a particularly [horrible mistake], such as messing up the lyrics to the national anthem of the United States before a major sporting event that is being viewed by hundreds of millions of people worldwide.
The word ramparts was specifically chosen in reference to the line of the United States national anthem that was fumbled by Christina Aguilera during her performance at Super Bowl [XLV] on [February 6th], 2011.

[Lanell]

a large wall built round a town, castle, etc. to protect it