Beibhinn

A drunken irish woman with hugemongous breasts.

Look at that Beibhinn!

by Grkn October 6, 2003

Beibhinn

Someone who you think is your friend but then totally backstabs you and leaves you alone.

“Wow she just like totally stole your boyfriend from you.”

“Omg it must be a beibhinn.”

by Sofieeeeeeeee November 2, 2019

beibhinn

A debilitating disease where your breasts shrink and eventually fall off.

I lost my breasts to the beibhinn.

by ghale June 5, 2021