The act of fooling around and not doing your job. More specifically, the act of writing, or spraying, the numbers 40 on a wall in an undeniable reference to a 40 rock of cocaine. It's mostly used as an excuse for not doing your work.
Person 1 "Are you slacking off again?"
Person 2 "Nah man, I'm testing spray patterns!"

OR

Person 1 "Why are you writing 40 everywhere?"
Person 2 "I was just testing spray patterns."
by Kurzawa June 16, 2011

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×