to split (especially the cost of something) equally between two parties
I knew she wasn't going to put out, so I made her go halfsies on dinner.
by bdb484 December 12, 2010
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To split the purchasing of a pizza equally among two parties.

Since its inception, the term "halfsies on a" has extended past usage in pizza realted terms and can be used in ordinary conversation pertaining to more typical purchases.

The term's first documented usage was by two white suburban Detroiters during Colombus Day weekend 2004.
"I'm famished, you wanna throw halfsies on a pie?"

"Let's go halsies on a prostie."
by Mangelo January 23, 2006
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Sharing something, typically the cost of some purchase, equally between two people.
"Do you wanna go halfsie-splitsies with me on these adult diapers bro?"

"Bro sure I'll go halfsie-splitsies with you, we both use them every day."

"I love you bro."
by kmk2124 October 30, 2021
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Describes an individual (typically a homosexual male) who sexually prefers both top and bottom, depending on the situation.
"Is John a top or a bottom?"

"Neither. He's a halfsy holesy".
by Hello...kitty September 14, 2008
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