The word "quiche" was invented by a year 12 student named Ja'mie King at an all girls school in Australia.
Her inspiration for the word was herself.
It basically means "hot" but like it's a step above hot.
In order to be "quiche", you must also have a "box gap".
Here, she defines it in her own words:
So yeah, usually you just say something is "so fucking quiche."
Obviously not quiche (boarders):
Hot naked straight dudes doing "Wrecking Ball" = SO QUICHE.
Recreating Spice Girls photo shoots with your gay BFFs is SO fucking quiche as well.
Guys who wear Uggs. Not quiche. Obviously.