look up any word, like lemonparty:
 
1.
1. Relaxing, not doing anything difficult or stressful.
2. Used to describe a relaxed, good, positive feeling or event.

An abbreviation of the word Casual.
"I'm doing casj at the moment."

"Today was a casj day."

"Work was not casj today!"

"How are you?"
"Casj"
by Constrictor August 27, 2008