captain sketch bag 

Someone who is overly creepy, iffy, unsafe

Captain sketch bag keeps looking at me like we wants to kill me

captain sketch bag by YungO March 9, 2009

Reverse Etch-a-sketch 

The act of sneaking up behind a woman, reaching around to her breasts, and twidling her nipples between your fingers like the knobs of an etch-a-sketch.

"When she least expected it, Tim snuck up to Claudia and began playing reverse etch-a-sketch with her."

Reverse Etch-a-sketch by beaux jaune March 5, 2010

hella sketch 

Something that is very out of the ordinary, shady, or suspicious.

Person A: Did you see that creeper?
Person B: Yah, he was hella sketch.

hella sketch by norcal415 May 20, 2009

Hidamari Sketch 

The act of sketching sunshine.

Yuno: Hidamari Sketch is our homework.

Hidamari Sketch by TriariusTheThird July 21, 2013

Keep sketch 

The art of asking one or more people to keep an eye out for an authority figure while you do something questionable or slightly illegal.

Especially popular with teenagers doing things like graffiti or stealing something from a garden, school, shop etc.

Group of lads are walking down the street when one sees an apple tree in a garden.

Tony :Hey lads keep sketch while I nick these apples.

Keep sketch by MrWeldon February 6, 2018

mad sketch

A person, place, or thing that is very shady, suspcious, or has unknown intentions.

This party is mad sketch.

mad sketch by kittenfromeire May 4, 2006

Super Sketch

A person or persons that is very skecthy. A super sketch would be abnormally sketchy - beyond repair. See sketch or sketchy and then multiple that awesome personality trait by 100%. A super sketch could also be someone that backstabs people and talks a lot of shit about people.

Jim, I am getting that vibe that Susan is a super sketch. She is very nosey and she seems like the type of person to tell everyone your personal stories.

Super Sketch by One and only Wookie February 20, 2004