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Sines is a person who is caring, loving, protective, kind, stubborn, hardheaded, a good listener, and hilarious. He can make you laugh and want to smack him all at once. He is probably into sports and always gives 100%. He is an amazing best friend who would put up with even a crazy person if he considered her a friend. He is someone who will be with you through the good and the bad. He is and always will be that one person you can turn to when you have a problem. Yea so did i write this myself? Probably. Just wanted to check out who reads this stuff until the end so hit me up with some weird emoji if you made it this far.
Sines is funny.
There is also a city in Portugal called Sines. But Sines has not been there yet.
Sines by Simulex November 23, 2021
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gang sines 

a sign or any trace that math heads or the math club has been in the room. Usually sighted as long complex problems written on the board and the only thing you know about it is that a "dot" refers to multiplication. Sines of course is refering to the type of line that is to measure a wave.
-walks into home room-

tim: look at the Gang sines
matt: jesus...they are good
tom: 42..the answer is 42 not the square root of pi times 27 cubes....gosh...idiots
gang sines by history753 February 23, 2005
Related Words

Clown Sides 

The appearance of a vast amount of pubic hair protruding from beyond the bikini line, resembling the hairdo of Krusty the Klown from, "The Simpsons."
When Holly took off her pants, I assumed that 50 people would have jumped out of her panties based on those clown sides.
Clown Sides by UrbanBurban February 28, 2015

Sanders Sides 

An ongoing YouTube series created by the EX-viner Thomas Sanders.
Me: Aw man Sanders Sides is such a good series!!
Everyone around me: wtf is that??
Sanders Sides by tinajbee November 2, 2019

St. Louis Sidestep 

A slang racing term in which a driver starts out on the outside of a turn and then cuts to a sharp inside line to pass a driver that is near the center of the curve.
Kurt swiftly pulled off yet another St. Louis Sidestep which let him finish in first.

I see both sides like chanel 

A Bisexual statement made famous by Frank Ocean's song "Chanel," and it's supposed to be a metaphor since the Chanel logo has two C's facing opposite ways... c what he did there?
Boi: You gay?
Boi 2: nah fam, I see both sides like chanel
Oh my god that was simply Sinehan!
sinehan by Karthik May 16, 2006