Definition
For no particular reason, just because it is fun or entertaining; or to relieve boredom.
Origins
Originally, for no other purpose but to make one smile.
Also Said As
- for the heck of it
How People Actually Use It
An infamous engrish phrase appearing before boss fights in Treasure's Radiant Silvergun. Considered to have a certain Zen ring to it.
"BE ATTITUDE FOR GAINS"
Source: Urban Dictionary