A girl who is very attractive but due to more attractive sister(s) or long term friends has not gotten exposed to people thinking she's hot since they all go for the sister or friend. Usually consider themselves ugly and like in Ugly Duckling Syndrome have good personalities and will date any guy because "Looks aren't important" and they have a good sense of humor.
Originates from Cinderella.
Aaron: Amy you're hot
Amy: No I'm not, my sisters are and I got the shitty genes
Aaron: Want to come over later?
Amy: Sure, your funny.
Aaron: Hurray for Step-Sister Syndrome
21๐ 28๐
Amanda Lucia and Riley Annette
-saving lives one douche bag at a time!
-WOAH! that guy is such a jerk!
-Yeah, the extraordinaryly normal sisters need to get ahold of him!
4๐ 3๐
1. a thing you shout during an intense game of bocce to pysch out the other team.
2. something I want to fuck
nothing like your sisters ass in my face, i am going to lick it dry
30๐ 41๐
when two lesbos scissor and make out at the same time while twisting there fingers around in there buttholes
kelsey and her girlfriend double sister twistered eachother yesterday it was nutz.
3๐ 2๐
A female who has had sex with the same man as her good friend.
I knew me and Mary were sisters for life, but when I found out she slept with Billy we became pussy puff sisters
2๐ 1๐
Sebastian has a hot sister
That's a Dude with a hot sister, IS THAT SEBASTIAN?
3๐ 2๐
When your (girl) friend asks to go on your shoulders, lets say at a concert or festival, and she isn't wearing any knickers, she subsequently gets the back of your neck wet, officially making you Wet Neck Sisters for life. A bond that can't be broken.
Remember that time Lauren went on my shoulders commando and we became wet neck sisters!
3๐ 1๐