NOUN sketchball- a person who is sketchy. usually describes guys, hence sketchball.
ADJECTIVE sketchy- questionable, weird, creepy. usually describes behavior or people.
VERB sketch me out- to weird out or to do something very weird that bothers you
that kid in the corner is so sketchy. he never talks and always wears those weird gloves and reads mystery novels.
he sketches me out so bad. i try to avoid him because he is so creepy.
Girl "Yes! It creeped me out. It was so sketchy."