When your mother starts having babies before your granny stops having babies, and now you are 3 years older than your aunt, but you're both raised like siblings.
Mama if you get pregnant now, my child will be a sister Aunt.
by Tara Crush April 29, 2019
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A person which is not blood related to your family, but acts like both an older sister and a cool aunt. She fits right in to your family as if you are blood related.
Lara is our older sister aunt.
by ohlala1010 June 30, 2021
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