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1.
Someone who is sarcastic, practices sarcasm.
Sheldon (Big bang theory) is a Sarcasticist and he doesn't even know it.
John, you're sucha Sarcasticist.
by MagicDustforaNeondream. June 04, 2012
 
2.
One who is SOoOooOooo amazingly versed in the ancient art of Sarcasm.
Oh my god he is SUCH a great sarcasticist, I wish to be JUST like him!
by Mr. & Mrs. Fornicacious August 06, 2008