A reactionary phrase in response to any statement that the user of the word views as rediculous, stupid, or simply incompliant with their beliefs. Can also be used with other exclamitory words for added emphasis (i.e. eh fucking deah)
"Yo man, I heard you love gaping warts in your asshole"
"Eh Deah!"
"Your girlfriend looks like she's 12"
"Eh Deah!"
"Stop getting your dick sucked in my bathroom so I can take a shit!"
"Boom De Ah Dah" is something you say, sing, yell etc., when you are very happy, and wish to state to your surroundings that you love the world.
It is known from Discovery Channel's advertisements, in which various people from Discovery (including Myth Busters, Bear Grylls, Mike Rowe and Richard Machowicz) sing a song called "The World is Just Awesome" together with a wide variety of people non-famous people, or people not known from Discovery (Astronauts, monks, Stephen Hawking, etc.)
I love the whole world, and it's such a brilliant place! Boom De Ah Dah!
Man, it's been a great day, and the sun is shining brightly! Boom De Ah Dah!
DeAhmbrie is usually a brown headed girl with beautiful brown eyes and a witty spiritalways ready for a challenge even if it means losing something really close to her