Definition
Out of physical or mental energy.
Origins
From spoon theory, in which the amount of physical or mental energy that a person has available for daily activities and tasks is metaphorically represented as a certain amount of spoons.
How People Actually Use It
Completely out of energy or motivation for the day. Particularly used by those suffering from a disease or disability of some kind. Source: The Spoon Theory by Christine Miserandino ( butyoudontlooksick.com/spoons.htm )
""Sorry, I can't come over tonight. I ran out of spoons.""
Source: Urban Dictionary