by Josh Posh December 7, 2009

When slender man chases his victims. they start to become insane, paranoid, and anti-social, it will get worst up until they get taken away by slender man and never seen again.....
Stuttering Craig: Whats wrong with Ben?
Chad: Slender Sickness.
Stuttering Craig: Dang I feel sorry for him.
Chad: Don't he wont suffer much long.
Stuttering Craig: Why?
Chad: The Slender Man Will get him
Chad: Slender Sickness.
Stuttering Craig: Dang I feel sorry for him.
Chad: Don't he wont suffer much long.
Stuttering Craig: Why?
Chad: The Slender Man Will get him
by proto man x July 21, 2012

Sunday Sickness, The horrible feeling you get on a sunday, usaully in the afternoon, not nescciarily After drinking on saturday night.
"josh do you want to come out this afternoon?"
"sorry mewser i cant i have really bad Sunday Sickness"
"booooo"
"sorry mewser i cant i have really bad Sunday Sickness"
"booooo"
by Joshhy x December 20, 2008

The inevitable round of cold- or flu-like symptoms that plagues engineering students at least twice a semester, without fail. The primary causes of this illness are exhaustion, stress, lack of exercise, alcoholism, lack of sunlight, poor hygiene, poor diet, and chronic depression.
by John Q. Stamos April 4, 2010

Jarome: (Makes an airborne pass over the sticks of three defenders right to a team mate)
Spectator: Sick Sauce!
Spectator: Sick Sauce!
by Neon Tiger February 8, 2010

When one or both of the female's breasts are feeling under the weather, thus resulting in violent projectile regurgitation via the nipple hole.
"Excuse me teacher... Can I please go to the bathroom? I think I have sick tits."
"Hey, why is her shirt all wet?"
"Oh, she has sick tits."
"Hey, why is her shirt all wet?"
"Oh, she has sick tits."
by Narrated by Morgan Freeman January 20, 2015

British slang for retrieving one's amusement through less than suitable manners. Acts of a lewd or sexual manner.
by johnfright October 21, 2010
