When you eat in a restaurant that serves catsup in those red plastic squeeze bottles with no labels and may have been sitting for long periods of time or even in the sun, the contents may be of dubious quality.
A sketchyindividual that ditches on hanging out more often than actually following through with hanging out. They are unreliable and will never show up even if plans are made months in advance.
Day 1 -Earlier
Person 1 "Yo, you want to hang out tonight?"
Person 2 "Hells ya, 7:00 work?"
Person 1 "Yea, I will call you."
Later on (7:00)
Person 1 calls person 2 at 7:00 in 15 minute increments and no answer.
Usually experienced on a Sunday (or sometimes Monday) it involves 2 main ingredients. Several people sketching from the night before, and a hightened level of drama.
William: "Did you just hear person A had sex with person B while his girlfriend was downstairs passed out?"
June: "Yeah, I'm staying clear of that Sketchuation"
a. A person that is so involved in drugs, alcohol, sex, and general debauchery above what is conceiveably possible.
b. A shady character.
c. Someone that appears to have no moral judgment, self-respect, or general hygiene to the point where he/she is a total laughingstock that must be avoided.
Holy crap man, he lives in Roxbury, obviously hes a sketchball.
She dumped him and went out with two other guys on the same day? Holy sketchball, batman!