A reason to shout out this word is..To be in utter Dismay, to see something so insanely intense, You'll shit bricks for a week, Handicapping you to walk like you have a dildo shoved up your ass.
Warning: Saying this word may cause you to tap dance uncontrollably, like how Bill Cosby says "God Dammit!", or "Jesus Christ!", even as much as how he slurs his speech, which sounds like he has a dildo shoved down his throat.
*Billy shits bricks, Tap-Dances home with dildo shoved up his ass, and tells parents about what happened to Sally which then causes a 'Brick-Shitting Chain Reaction*
Can be used as a expression of surprise/dismay/happiness/anger. John Belushi says this in the film "The Blues Brothers" when John Belushi realizes he needs to get his band back together.
John Belushi (as "Joliet" Jake Blues): "The band...the band!"
James Brown (as the church pastor): "Do you see the light?"
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.