A person who loves Halloween above all holidays. Halloween is their Christmas, Easter, Valentines and St.Patrick's day all-in-one. Of course this person probably dresses mostly in black, could be kinda scary themselves until you get to know them, makes cool props, decorates their yard and home like a haunted house and has no problem coming up with the most creative and original costumes ever to show up at a party.
(Definitely an interesting person to know in my humble opinion!!)
"My neighbor is a huge Halloweenie! His yard looks like Night of the Living Dead every October!"
by GhostFaceGirl February 8, 2005
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Someone who dresses up as someone/something based on an arcane cultural reference that no one would get, for the sole purpose of showing off how much of an intellectual they are
Guy1: So who are you dressed as?

Guy2: I am dressed as <insert unpronounceable name>

Guy1: Uh...

Guy2: Its from <insert arcane play/novel/movie>. I can't believe you have never heard of it.

Guy1: Dude, you are such a Halloweenie
by kitwalker October 28, 2010
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Holiday celebrated with “dick or treat”, and many latex ghost and birthday suit costumes.
Bobo texted his usual booty call to see if she wanted to have a Halloweenie party.
by HumaneAnimal October 31, 2017
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The genitalia of a male skeleton (females have a hallowenus). Although many will argue that this is impossible for a skeleton to have a hallowenie as a weenie “does not have bones”, this is obviously a lie created by the government.
Spooky girl A: “OMG did you see Jeff’s Halloweenie? It is sooooo big!”
Spooky girl B: “IKR, that guy is so hot”
by Mr_PP October 30, 2019
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Someone who breaks up with their significant other on Halloween so as to avoid the holiday season and its attendant familial obligations and gift giving.
"Look, I just don't think this is going anywhere and I really don't want to suffer through Thanksgiving with your family nor do I want to waste $100 on a present for you. Sorry to be such a Halloweenie." ~ what I wanted to tell my last boyfriend
by Aliemira January 1, 2009
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the awkward boners most guys get on halloween because of all the slutty hoes
That hoe dressed like Oprah is given me the weirdest halloweenie i've ever had.
by Tlogz November 1, 2014
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someone who has a very ugly face. That person likes to wear shorts and a hat all the time.
A good example of a Halloweenie is a person named Carl Hoopingarner.
by Rainbow562 February 2, 2018
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