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1.
An euphemism for the much cruder: fucker, sometimes: mother fucker
Leaving the Quick Stop market with his 12-pack, Elmer bid farewell to the doof at the register: 'See ya' later, copulator!'
by Century25 December 01, 2012
 
2.
Slang term mainly used by some Australian males when parting company with a male friend or peer as a direct replacement for "See you later"
Bazza says: "I better get home or the missus will kill me."
Kev replies: "OK mate. Copulator."
by JD_Oz November 10, 2006