The self-proclaimed leader of a cult of pseudo-deadheads who claim to embrace the deadhead culture, but only live to belittle others.

See also: white trash
Spack got so upset when a photographer dissed him that he went on an internet rampage for weeks.
di spackdesciple 18 aprile 2009
Someone who you want to slap round the face with a fish of some sort
Woah, someone's a bit of a spack...
di Maddinor 08 marzo 2012
A political spin attack aimed at discrediting an alternative view, derived from SPin attACK. First noted use Aug 2012 in an exchange of correspondence with conservative constituency office (Tewkesbury UK).
The politicians SPACK upon his rival was misleading and aggressive.
di wvpTV 06 agosto 2012
Mentally retarded person derived from spastic
You spack! (Insult)
di Northerner 02 luglio 2003
The sound that a blast of cum makes when hitting a hard surface, such as a bathroom tile floor.
The spack of that hot guy's load on the bathroom floor startled him.
di Wordmaster B 28 dicembre 2004
A term used in ballet to describe an arabesque that isnt fully to the back, but rather somewhere between side and back.
"Isabel, your arabesque is spack".
di KateritecawithA 10 luglio 2009
Spack is a Spaz on Crack. A person on crack who happens to be a spaz. Someone who acts like a spaz and also like someone on crack. a form of showing someone your anger or frustration. Also a form of insult.
Omg, Amy Winehouse is such a Spack!
di Jessiaaaaaaaaaaaaaaaaaaaaaaa 10 luglio 2008

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