This is used to describe people who exclusively use Sitka branded gear, and think they are better than everyone else because of it. Sitka's motto, "sick for it" is a common hashtag people use on social media when posting about Sitka gear, hence the disease "Sick-for-it-itis" . People that suffer from this disease are usually cocky, and look down upon others because they spend thousands of dollars on mediocre, at best, gear.
"We knew Bobby had a strong case of Sick-for-it-itis when his entire instagram account consisted solely of Sitka gear pictures and #sickforit hashtags."
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If you have a cold and someone is being annoying cough or sneeze in your hand and precede to smack the annoyance across their face.
you: shut up!
them: no (continuing to be annoying)
you: Sick Slap! (sneeze in hand and slap across their face)
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An awesome book written by Walter Dean Myers, really made me think.
You should go and read Dope Sick
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When someone wants you to do something that is competly stupid and you deny them
Friend 1: Hey man wanna buy me some food.
Friend 2 : Your sick get your own money.
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a complement on how cool something or somenone is
random person; you look really sick nasty with that boy
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When something is just so insane and unbelievable.
"The way that chick ran track today was sick nasty"
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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!
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