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1.
A situation that epitomizes all things comcastic; a complete fiasco.
George Bush's presidency has been an utter comcastrophe.

A Ben Affleck movie marathon is on HBO? What a comcastrophe!
by C-Dawg06 January 23, 2006
 
2.
1) What you call an incident in which people of Arizona being forced to watch porn in the middle of Super Bowl, their beloved Cardinals got screwed moments after.

2) Receive crappy service
COMCASTROPHE!
by Idiot-Finder February 04, 2009
 
3.
An event that is, in a fundamental way, Comcastic.
A car crash is tragic. A twenty-car pileup, more so. But a twenty-car pileup involving just clown cars... now that's a Comcastrophe.
by carpainterly May 14, 2007