You can’t go wrong with sienna. She is the most amazing girl you could ever meet, she is usually short and has brown hair and eyes and she talks a lot. She also has a toe fetish.
by DancingMilly567 July 23, 2019

A girl who gives mixed signals. You probably will like her, but if you make the first impression bad, you will regret it later on.
YOU WILL NEVER RECOVER, be careful buddy. She a true hottie tho!
YOU WILL NEVER RECOVER, be careful buddy. She a true hottie tho!
Me - *makes inappropiate joke to friend (not intended to her) while she is around*
Friend - *laughs*, "Yes, that was actually funny my guy fr.
Her - *disgusted or weirded out in someway*
IT WILL TAKE A LONG TIME TO RECOVER IF U LIKE HER OR SOMEONE NAMED SIENNA!
Friend - *laughs*, "Yes, that was actually funny my guy fr.
Her - *disgusted or weirded out in someway*
IT WILL TAKE A LONG TIME TO RECOVER IF U LIKE HER OR SOMEONE NAMED SIENNA!
by J@cob_TRUTH February 13, 2024

Sienna DeAngelis is a funny, quirky girl. She loves playing sports, getting her nails done, and drinking lots of water. She is an amazing friend and is especially fond of boys. Some boys that Sienna DeAngelis’s are fond of are Nicholas, Steven, George, and David. Sienna continues to be an icon in the world of Snapchat and will love a long healthy life.
by booklover67 December 4, 2021

National Sienna Leigh Jackson Day is on the 30th of June, on this day everyone must be friendly to Sienna Jackson and bring her gifts if you would like to give her something for her special day! This day is for one individual called Sienna Leigh Jackson
by Lee Thomas Harwood May 23, 2022

Falls in love with one or more guys And Normally named Ethan and kobe
Brown Hair with color
Best Friends are one tall and blonde the other short with black hair
Gymmast
Brown Hair with color
Best Friends are one tall and blonde the other short with black hair
Gymmast
Me: Wow Sienna's best friend can play football really good
Friend: yeah I heard Sienna and Kobe are dating now
Friend: yeah I heard Sienna and Kobe are dating now
by The awesome loser April 20, 2018

She will surprise you. Often siennas are like mirrors. You see one thing and then another. She is nice then mean and also sometimes will have boyfriends that last a day or two, maximum. Otherwise excellent.
by I make Definitions Bree December 14, 2021

Sienna Syndrome is a type of syndrome where you have a crush on a girl. Once you do, you forget she is in your presence and start acting goofy, inappropriate (as a joke), and weird in front of your friends which makes you laugh. Your crush gets weirded out and there is never a chance for a second impression, though you can still come close to her if you are somewhat of her type and improve. Not guaranteed though. Men, be careful! It may be uncurable if you aren't careful and do it for long periods of time without knowing she doesn't like you for a while.
Me: *acts weird in front of friends and makes them laugh and say something just as weird back*
Crush: -in the distance- Wow, he is kind of weird. I'm going to try and avoid him.
3 MONTHS LATER...
Me: Hey -----!
Crush: Oh it's him.. Hi.
Me: *walks away* How can I make her mine?? It is so weird how she is acting
GOD: The irony is crazy! >:) He definitely has Sienna Syndrome.
Crush: -in the distance- Wow, he is kind of weird. I'm going to try and avoid him.
3 MONTHS LATER...
Me: Hey -----!
Crush: Oh it's him.. Hi.
Me: *walks away* How can I make her mine?? It is so weird how she is acting
GOD: The irony is crazy! >:) He definitely has Sienna Syndrome.
by J@cob_TRUTH February 13, 2024
