One of many words used improperly by Zladko in his hit song "Elektronik Supersonik." Offblast is meant to refer to blastoff, and is used near the beginning of this song. This term is used in Mystery Science Theater 3000-esque mockeries of cheesy movies that include a scene of something blasting off, such as in Rocky Horror Picture Show at the end as the house lifts off into space.
Five... four... three... one! Offblast!
by Devik November 14, 2005