Someone who is home on halloween, and you can see through the window doing something sexual but is not giving out candy.
That jackass down the street is such a hallowiener, he is having a three way instead of giving out candy
by crazyman23 May 26, 2011
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Ha·lo·wē′nər n.

When a man dresses up his penis for his sexual partner for the purpose of sexual arousal.
"Hey Lindsey, take a look at my Hallowiener. It's Harry Potter!"

"Johnny gave me the best Harry Potter Hallowiener last night."
by Kitson Kat March 12, 2017
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