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1. the act of paying half of something.
2. a shared cost
1. Hey Neil, let's go splitsies on a case of beer.

2. Kate, you still need to pay your splitsies from last weekend.
splitsies by Katie McIntyre December 3, 2005

Splitits 

The natural and quite pleasant accentuation that occurs when a long strap or belt is is placed between a woman's breasts, like when they carry a shoulder bag with the strap positioned on the shoulder on the opposite side of their body.
Henry's got excited when he noticed his date's splitits after she fastened her seat belt.
Splitits by beeyebickiebuy October 4, 2006

Jehovah's Splitness 

The only real way you can deal with a JW that is a member of your family. No matter what you say you cannot convince them that they a working for an enormous tax dodge publishing empire based in NYC.

In return they have to stay away from you once you make it clear you think their beliefs are beyond whacky.

The result - you don't see each other, but you still get to go to all the fun things like birthdays etc without that freak being there. Win!
Bob: Hey, is that your brother in law? Lets go say hi.

Adam: Nah man, he's a JW, we are keeping our distance.

Bob: Sounds like some serious Jehovah's Splitness there bro?

Adam: Damn right, it's awesome.

splitzies 

The process of splitting winning from a Bingo game, between multiple persons. Must be decided apon by all players before bingo starts.
"Hey, are we playing splitzies?"
splitzies by Wondercoll July 23, 2009

halfsie-splitsies 

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."
halfsie-splitsies by kmk2124 October 30, 2021