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sinseriously 

Emphatically exhibits the sincerity of your seriousness. The classic use is to close a letter with it.
Dear Urban Dictionary:


Thank you in advance for considering “sinseriously” in your Urban Dictionary.

Were sinseriously to be included in The Urban Dictionary, that would make my day, perhaps even my week.

Sinseriously,
Cyprus Denton Fekks
sinseriously by Cyprus Denton Fekks February 19, 2010

jacob sartorious syndrome 

When you are an older male, yet your voice is almost like puberty is deciding and you barely have eyebrows. Please take a moment of silence for those with JSS.
I think Brandon totally has Jacob Sartorious Syndrome. Just listen to him talk!

jacob sartorious 

an annoying scrawny kid that can’t sing and is a flop.
jacob sartorious by troll238 July 25, 2019

jacob sartorious 

a little fuckboy that photoshops his eyebrows in his album cover
wow, that kids eyebrows are so jacob sartorious

Jacob Sartorious's 

Jacob Sartorious's song is too cringe

Jacob Sartorious 

A type of trash that attracts ten year old girls all over the Internet. Jacob wears an acorn or some shit in his pants to look like he has a dick. He is widely known as the 'Fuckboy master'. Other names for him include the following;

Jacob Sclitorous,
Jacob Saggytits,
And Jacob Stegosaurus.
Person 1: "Oh my god dude! 'Hoodie' by a piece of trash is my fav song!"
Person 2: "Wow! A piece of trash produced by a piece of trash!"
Person 3: "Guys don't you mean jacob sartorious??"