" sacred cow "

 [ "sacred cow" ]

1: An almost universally accepted societal value that is almost immune from questioning, often unreasonably so.

  * e.g.,  ... Monogamy is one of our society's biggest sacred cows. 

 [ "sacred cow" ]

1:  Name given to a person who is politically or ethically beyond reproach or immune to adverse consequences.

  * e.g.,  ... "I can't believe Mathilde, she sits there all day surfing the web and doesn't get into trouble with the boss...I check my e-mail and instantaneously I am in trouble. She is totally the sacred cow in this office"  

 [ "Sacred Cow" ]

1: Nickname for a boy or girl who one dreams of being with. He or she is perfect in all ways even past physically desires. Something of love The perfect person in your eyes who you would pick above anyone else.

  * e.g.,  ... John: Dude that girl is hot! 

 [ "The Sacred Cow" ]

1: Name given to the first aircraft used to regularly transport The President of The United States, a C-54 Skymaster. This Aircraft was the forerunner of Air Force One.