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1.
Sackage is a postmodern word that has evolved into meaning "the good things in life".

It started in the Scottish Borders town of Selkirk with local menace Dr Crack, initially referring to being desirous of being sacked from her job. The actual name of the employer is unknown to scholars, who point to a variety of nicknames, such as; The Death Star, Arse Factory and Soul Toilet.

The true identity of Dr Crack is also a mystery to academics, due to the number of alternate nicknames bandied about.

The word has, as previously said, evolved into meaning all of the little things that make life bearable for the working stiff. A night in the pub could definitely be sackage, as could a good book, friendship, or even simple pleasures like stuffing oneself full of junk food additives at lunchtime and buzzing one's way through a dull afternoon at work.

The antonym for sackage would almost certainly seem to be bawbaggery.
It's time to leave work. Now, that's sackage!
That beer was pure sackage.
It's all about the sackage.
by Steve Jesus May 18, 2007
 
2.
the word one may yell after the act of sacking someone very hard using any means possible (i.e. disctraction, then sack; agressive sack; defensive sack..etc..)
man A:*Sack!*
Man B:*groan*....they're in my stomach!!
Man A: Sackage!!!
by G2lenn August 18, 2008
 
3.
the swinging of ones nuts onto someone else shoulder
jonny nuts swing onto matts shoulder.
PS he does it with love
by R G October 13, 2003
 
4.
someone who has issues and tends to act gay/lesbian (in a playful manner)
Sarah was acting like such a sackage. She was sniffing her pens and then looking at me with a strange smile.
by Noodles.. May 16, 2003