Top definition
A sister who is your mom, vice-versa for a mom who is your sister.
Originates from my very own momister fiichen uwu
fiichen from roblox is my momister
by i love fiichen sm sms ms smsms December 13, 2019
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May 20 Word of the Day
A cryptocurrency of little to no value, usually a late-comer to the Bitcoin craze, a copycat cryptocurrency.
There are so many shitcoins these days, just stick to the classics.
This new b1tc01n crypto is just another shitcoin.
by Tatsuman February 18, 2018
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