tired-core 

being hella ultra sleepy

man dude i stayed up on the computer sending in things to urbandictionary.com and im so tired-core

tired-core by Kregg October 15, 2003

shoyo.core 

someone you definitely must protect, they are one of a kind and they are a very likeable person

i would never forgive someone if they were to spread false rumours about shoyo.core

we love shoyo.core

shoyo.core by areweabt2hookup??? January 3, 2022

Barbie Core 

a groups of people who want to be overly perfect barbies.

omg!!!
shes wearing red braceletts!
i bet shes in the barbie core!

Barbie Core by JadieLouuu March 10, 2007

park core 

It's basically free jumping but it is at the park.

Calvin, do yo want to go park core at the park?

park core by RFGT December 6, 2013

Clown Core

Belligerent DoD contractors that run people off the road in their Ford F-250s (diesel) while mashing on the gas to the point of pouring black smoke everywhere and recruiting for the T-ban.

Wow, Clown Core is really in a hurry to get back to sitting around their camp today, with no alcohol.

Clown Core by Matt Honcho August 11, 2008

hard-core 

used to diss an act/person/object considered cool by a certain sub-culture - considered rather pitiful by outsiders

those unemployed/uneducated rudeniks driving up and down outside the college trying to pick up high-school girls are so hardcore

hard-core by tink May 3, 2004

apple (core) 

Noun. 20. Cockney rhyming slang on 'score'. 1950s

"The fifty-niners are 25 against. So what's the apple core on the fourth, aye?"

apple (core) by Alex Quantashassle April 11, 2005