1) Aimless pencil work 2) Aimless scrawl 3) Aimless scribble 4) Aimless scribbling 5) An aimless drawing 6) Bit of scribbling 7) Board-meeting art 8) Casual drawing 9) Draw absentmindedly 10) Draw aimlessly 11) Draw idly 12) Draw in the margins 13) Draw on a napkin 14) Draw squiggles 15) Draw while chatting 1) Draw 2) Drawing 3) Scrabble 4) Scrawl 5) Scribble 6) Sketch 
A doodle is an unfocused or unconscious drawing made while a person`s attention is otherwise occupied. Doodles are simple drawings that can have concrete representational meaning or may just be abstract shapes. Stereotypical examples of doodling are found in school notebooks, often in the margins, drawn by students daydreaming or losing interest ....
• (n.) A trifler; a simple fellow.
absent-minded scrawl or scribble, usually executed in some unexpected place, such as the margin of a book or manuscript or a blotting pad when the ...
Doo'dle noun [ Confer Dawdle .] A trifler; a simple fellow. 
Doodle is slang for the penis.
[v] - make a doodle
Penis
verb make a doodle; draw aimlessly
penis