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When an event/thing turns even worse than terrible..it becomes turdable.
Guy 1: "yo as if this party wasn't the most terrible party ever..we just ran out of beer."

Guy 2: "dude this party is turdable"
by DrayDero April 26, 2009
Adjective - used to say that something is just as bad as or worse than what can be crapped out of your butt. Could also be a response to a bad joke or phrase.
Example 1 ~ P1: Did you just see that guy pick his nose? P2: Yeah, man that is just turdable. ~ Example 2 ~ "Once I had a dog without a nose." "Really? How did it smell?" "It smelled turdable."
by B.E.A.N. February 11, 2011