1 definition by Alleyoopskim9

A term used for one who is unreliable, never on time, and never comes through with anything he or she may say. Always tells lies, sometimes may be annoying, and overall very biased. This can relflect any person that may have screwed you or someone else over.
Lucas: I can't believe she stood me up last night, why would she ever do that?
Casey: Dude I know right what a cockslayer.

Lucas: Of course, Alex says he was going to get us food for free, but as always he didn't come through.
Casey: I know dude he always finds a way to slay our cocks.
by Alleyoopskim9 June 6, 2011
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