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O'Slick or Slick'O is a name associated with 'gangbanging' culture. O'Slick is a name often owned by gangleaders and needs to be earned and can not under any circumstances be claimed or 'bought'. Once a streethustler has earned a large amount of 'streetcredz', he/she may be able to call themselves O'Slick. However, very few hustlers dare wear the name for reasons unknown to most outsiders. There has been incidents where hustlers who claim to posess the right amount of streetcredz and then proceeded to call themselves O'Slick, have died within hours of the namechange. The origin of O'Slick is unknown, but the first mentions of the name is dated in the early 20th century. CAUTION: The wrongfull acquisition of the name is considered extremely dangerous.
"Y'all wanna go hit up the liquor store on 7th?"
"U crazy, Tiny T! We gotta get O'Slicks permition, that his turf y'all digg?"
"damn straight, neff! We gon get shot up on the block, ain't no way I'm doin' business in O'Slicks turf without his blessing uhearme!"
O'slick by SlickO May 12, 2015
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fully sick o'clock

The time when your fully sick cuz checks his watch after hitting the gym
Mohammed: Oi Habib, what's the time bru?
Habib: Aww bru. Lemme just a check here...
*puts down invisible suitcases*
Habib: Aww bru, it's a fully sick o'clock bru
Mohammed: Aww shit bru! Ey Habib, I think you uhh.. you just lookin at your reflection bru!
Habib: Aww shit bru, think your right ey?
Related Words
O'slick fully sick o'clock o.g. o O.D o.O O rly O-Town o.u.t.l.a.w. o_O

Sick o Mode 

The superior use of “sicko mode,” as used by Travis Scott, made better by Travis Barger.
Ava: “That party was so sick o mode last night.”

Jayce: “I agree, very sick o mode.”
Sick o Mode by sickomode2004 November 26, 2019
Sick-o originated at or was at least popularized in Oakville, Canada. It's variations include sick-ass. It has the same meaning as sick, only slightly better.
Yo man, that concert was sick-o!

Cheerleading is sick-o!
when u get fuckin sick of everything, everyone and all that has to do with ur surroundings
im so fuckin sick-o everything!
sick-o by Namdor11 April 20, 2006