When you dip too much guacamole or salsa or anything on a chip and you need to add another chip to even the Chip/Dip ratio.
*dips chip in salsa*
Aww man I went overboard on the salsa! Time to use a supporting chip *reaches in bag of chips and grabs another chip*
My Chip to Dip ratio is now even! Yummy.
Similar to third wheeling, a side-effect of feeling outcast or playing second fiddle to someone more popular or important.
Person 1: Hey, what's wrong with Marcus?
Person 2: Oh, he's dealing with supporting character syndrome.
Person 1: Oh, from Jason and Sarah?
Person 2: Yeah.