Siblings born in the same year to different mothers.

A pun on Irish twins, Black Irish, and the multigenerational deterioration of African-American families.

NB: You don't have to be Black to have a Black Irish Twin.
The other eighth graders thought Dion and Errol were kidding about being "brothers from another mother," but they mean it literally since they were Black Irish Twins.
by PBMax February 23, 2008
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N AND Z are the irish twins with thicc eyebrows

you can see those eyebrowussys form a mile away

get your zandnussy now at irishtwins.ussy.com.ussyau
OMG IS THAT THE IRISH TWINS

N.G AND Z.G

DAMN I CAN SEE THEIR EYEBROWUSSIES (plural)
LORD HAVE MERCY
by gisele is not home yet June 22, 2022
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Half-Siblings born within a year of each other, who have only share one parent.
"Trisha and Kristy are Dirty Irish Twins"

"They're both 24, I thought they were just twins."

"Nah, they have the same daddy and two different mama's, Trisha turns 25 this week and Kristy turns 25 next month."
by Asymmetrical May 28, 2022
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