An explosive bowel movement, usually involving an infant or toddler wearing a diaper which was either put on incorrectly or simply could not contain the explosive force of the movement.
My family and I were traveling over the summer and the smell of the car soured quickly. After we stopped and viewed the damage - shitastrophy was the first thing that came to my mind.
Example 1: "I came home and my dog had shit all over his kennel. His fur was covered with shit and the whole house smelled like shit. It was a total shitastrophe."
Example 2: "My dog shit on my floor and the roomba dragged it all over my house. It was a shitastrophe."
something very undesirable that occurs during sexual intercourse. almost always shortly followed by the sudden, yet mutually agreed upon permanent separation of the copulating couple.
helen: "what happend with you and Bill? i thought you were still riding him like a wild dragon-steed..."
Betty: "what happened???!!! what HAPPENED???!! well let me tell you about Bill and the 'rusty trampoline' move he tried last night...boy was that a sextastrophy"
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.