Top definition
An Idea that is so brilliant that it must of come from someone who is insane.

Something that is both incredibly intelligent yet crazy at the same time, like the story line of most Macgyver episodes.
The people who write Jack Ass must suffer from major brillanity.

The brillanity of todays world makes me want to drink but buy expensive things.
by Xristopher Cringle February 02, 2011
Get the mug
Get a Brillanity mug for your mom Nathalie.