sister-biffle

a sister who is also a best friend, or a friend who is closer to you than a friend and is more like a sister.
My sister, Kim, is also my best friend; she is my sister-biffle!
I love my friend Kristin so much, we are such good friends that she is more like a sister to me; she is my sister-biffle!
by BAD1484 May 13, 2010
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twin sister

It is when you tuck your penis in between your legs to make it look like you have a vagina.
When he showed me his twin sister I gagged in my mouth!
by Anonymous07 August 20, 2006
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igloo sister

When two females have been intimate with the same male,
When two girls have had sex with the same guy
Girl 1: Omg i had a one night stand with Frank last night
Girl 2: seriously?! I did him last week! now we're igloo sisters!
by taylor077 October 15, 2013
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Big sister

A big sister will mostly likely treat u like trash but deep down inside they love you. Sometimes when a baby sibling gets hurt they will most likely care for them like mothers but as a sibling.
*baby brother gets yelled at for spitting at his brother* then big sister comes in. *big sister holds him and hugs him for comfort*
by Bigbubblyrabbit2 November 28, 2019
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hi sisters

This saying began because of James Charles, he refers to himself as " the queen sister" and his fans are "sisters"

and that is the sister tea *sip*
James Charles: hi sisters welcome back to my youtube channel
Fans: Omgggg hi sister hehe
by um okay November 13, 2019
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sister cindy

the best tiktoker of all time. her godlike ways brighten my smile and when around her there is never a dull moment. we love u sister cindy
sister cindy is a goddess
by noravaxhole March 29, 2021
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Sister forever

Sister forever is a yt channel with 2 girls Allison (11) Emily (10)
These two girls are really big brats and get anything they want whenever they want/ go shopping everyday/ are never at home
They also are very bad at their grammar and keeping info private.
One time her family asked her mom to fill her water bottle up when she was literally in the kitchen and her mom was in her office like it’s not that hard

Step 1: open the cap
Step 2: put water in bottle
Step 3: grab cap and put it on top of bottle and twist

Allison is also very cringe when she says bro and thinks she’s aesthetic when she’s not
Emily and Allison from sister forever are brats. Periodtttttt
by Octopus_sk8r February 05, 2019
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