The theory that proves that 96% of all women that wear big 60's style sunglasses trying to look like M.K Olsen or Nicole Richie; are in fact ugly ass horse faces. These woman wear these " vintage knockoff" glasses in order to cover up the hidden horse face. As for the remaining percent, 3% are the women who are actually stunningly gorgeous and their glasses are either Fendi or Dior, and the remaining 1% are the fag ass dudes wearing purple/yellow scarves and grey cheap mondays who were never cool in highschool and still aren't cool.

1. dave-"yoh bro, check out that broad ore' there with the huge shades!"
shad- " no man, think about the Big Shades Theory that Kent taught us, she is totally a horse face."

2. dave- " yoh bro, check out that dude with the big shades. what a stunner douche."
steve- " yeah, what a douche, check out his sweet tapered cheap mondays though, never seen those before..."
by Lenny Marshall December 1, 2008
Get the Big Shades Theory mug.
Extremely shady person, selfish or stingy person, bitch
Big Shade over in the corner has an ounce of dro but won't even smoke.
by B-rah November 24, 2003
Get the Big Shade mug.