noun phrase. Terrifying tallywhacker tragedy.
Real citation: "A lot of girls consider uncircumcised men to be dirty. Maybe some guys just don't know about proper hygiene? Anyway, I'm uncut and I have yet to experience any kind of catastrophic penis failure."
(Dec. 15, 2007, Digg, http://m.digg.com/health/To_circumcise_or_not_to_circumcise_that_is_the_question?offset=35)
Made-up citation: "What does a man fear more than catastrophic penis failure? Well, giant octo-monsters. That's about it."