magna farta 

A contract between partners giving the other permission to fart freely. It is "signed" when the first one openly farts in front of the other.

When she let one rip as they got ready for bed, Fred knew that he could now fart whenever he pleased as she had signed the Magna Farta.

magna farta by Fartin' King John November 27, 2013

Magnafantastical 

So horrendously magnigicent that the fantasticality of the over all stupendosity is wretchedly indefinable.

Oh lord that girl's booty is Magnafantastical!!!

Magnafantastical by Zoe April 10, 2005