When someone is only a dick to certain people
Logan: Brad why does it seem like you're only a dick to me

Brad: Sorry Logan, I have Selective Dickism
by Roadhouse2769 October 1, 2016
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Someone who gives dick or some fucc to one person and one person only.
"Man, Logan only gives Laura his dick! I think Logan has Selective Dickism."
by durdew June 13, 2017
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