Top Definition
Something that is farttastic smells bad. If it's not a tangible thing, but you think it would smell bad if it was real, that would also be farttastic.

In Spanish, the word is farttastico.
rachel: imogen and spek should come back.
israel: yeah, them being gone is totally farttastic.

child: mom, what are you cooking?

mother: my family's secret recipe, doesn't it smell great?
child: no, it's totally farttastic!
by israel!! October 13, 2009
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