halfsies
slang Describing the act of sharing something, especially the cost of something, in equal proportion between two people. You wanna go halfsies on the bill? I don't feel like cooking tonight, let's go halfsies on a pizza instead. A: "I'll get us a hotel room, but can we go halfsies on it?" B: "Yeah, sure. I'll give you my share the next time I see you."
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