A condition where the male partner in a relationship clearly adores or is simply in love with their current partners sister. Given the opportunity all those diagnosed with this condition would instantly embark upon a new relationship with the sibling, at the drop of a hat.
"Ssup, dawg"?
'"I've been a twot! 20 years and I'm still sistering for Nettie. Poor Rene never stood a chance and she's a fucking shrew while I'm at it".
"That's harsh, Bred".
by zebraboy777 May 18, 2016
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An annoying person whom your parents love and cherish all the time, completely forgetting about you.

They usually get whatever they want, especially if they are younger than you are.

If they are older they get all the attention because they act out.

Every once in a while they can be somewhat sweet, but that's only every once in awhile.

They can throw tantrums, and your parents will finally cave in.

my mom doesn't really force us to do things. all my sister has to do is give her the silent treatment, and she gets it, Wala!

I'll tell my sister that I'm going to do something before her, and then she just goes and does it just to prove that she can get away with it.
by Sastina January 26, 2007
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Female sibling. A sister is a childhood best friend, lifetime protector, you’re rock and the mother of you’re nephews/nieces. A sister knows all of you’re flaws and loves you just the same. She also knows all of you’re strengths. No one keeps secrets like a sister and that is something very special. While you always have parents, not everyone has a sister. That makes them all the more special. Often many called their sisters “sissy” into adulthood or just referred to as “sis”
by Lindee August 24, 2018
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A nick name that was created for the beauty guru James Charles who in every videos beggining says "Hi Sisters! James Charles here and welcome back to my Youtube channel"
"Sister snached"
by SisterEmma December 5, 2018
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1. Fans of James Charles
2. A word you can just put before any “s” word and get away with it
1. Omg you watch James, you’re a sister
2. I just sister snapped right there
by Mitochondriapowerhouseofdacell November 29, 2018
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Everybody has friends, they come in and out of your life at different stages. But some have stayed by you your whole life and will never leave.

That, is your sister.
Your sister is your full blood relation. You have exactly the same parents and family members. She's the girl that understands you more than anyone else could, she's that shoulder to cry on when the world is against you and knows just what to do to cheer you right back up. She's one of the first people you come to with good news. She's the one that's there, telling you how proud she is of you and giving you encouraging words when you need them.
Your sister is someone you couldn't imagine your life without. There'd be no one to tell your secrets to and no one to keep you strong when you are feeling so weak. Having her in your life is so important and so vital for those moments when life throws something at us.
Tarissa: I'm so jealous of Kelsey and Emmi. They're so close, they even have a pact where they tell each other everything! Why don't we have that?
Jaide: Of course they do, they're sisters! They've known each other all their lives. We've only known each other 6 weeks, let's give it a few years and see how we are.

They stopped becoming friends 3 months later.
by LAWLxo September 14, 2012
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