Sketchead 

A sketchead is British slang for a douche-bag. And the stereotypical douchebag thing to do is to turn up to parties uninvited.

Also a song by Arctic Monkeys, from the album "Cornerstone"

"David is such a sketchead, doesn't he realize we never invite him to anything for a reason?"

Sketchead by _stx May 13, 2018

Sketchead 

Also less commonly known as a “bisexual abomination” on the social media website Tumblr

That Will, he must be a professional sketchead with trousers as fantastic as those!

Sketchead by Dantanian Yadathan February 2, 2022

Sketched  

To be scared or nervous when doing something bad or illegal.

I was so sketched when me and my friend were smoking weed in the bathroom at school.

Sketched by Quicksliver August 5, 2008

Sketchatary 

A Crystal Meth Dealer's assistant. Usually a person who has been tweaking for quite sometime and is always a little Sketchy. The Sketchatary handles the daily odds and ends the dealer is to busy to do or simply considers the tasks menial. The Sketchatary's compensation is usually in the form of Shards, small amounts of cash, and it assumed the Sketchatary will pocket 10% of product. This career path has its downsides. Mainly the Sketchatary will most like be the scapegoat if there is a bust by the feds. Also, advancement to Dealer Status will only occur when the Sketchatary's boss is murdered, arrested, or can't come back from a case of Meth Psychosis. All in all not a bad job if have become nothing more than a cluck.

I dont have time to go tot the needle exchange, I'll send my Sketchatary if he isn't too busy cleaning something or jerking off.

Sketchatary by SeattleHairyCub August 17, 2010

Sketchaphobia 

fear of .....
a) sketchy people
b) sketchy places
c) sketchy situations
d) any thing of a sketchy nature
e) all of the above

Whenever somthing iffy or questionable arises ,i feel my sketchaphobia kicking in hardcore.

Sketchaphobia by Chief Tiger Lily August 28, 2010

Sketchalunk 

A sketchy individual 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.

"Fuckin sketchalunk!"

The outcome is the same any day after this.

Sketchalunk by Ghostbustersfreak March 24, 2010

Sketchbag 

A shady looking character usually having a dirty and dissheveled appearance. Also refers the character of the person.

"Did you see matt?... What a sketchbag!"

Sketchbag by Brucie and Age December 5, 2004