Working odd summer jobs has been 'the sum of' my experience so far. [=has been all the experience I've had so far]
That picture 'sums' him 'up' perfectly. [=that picture perfectly shows what kind of person he is]
“So, you don't want to go because you think it will be boring?” “That just about 'sums it up'.”
(..) That's how it starts. God, I'm sorry. "I've been thinking about us." That's us with a capital "U". "The story of us. How the fuck do I sum it up?" "Has it been perfect? Hardly. Any story with me at the center of it will never be anything less than a big, smiling mess." (..)2014 TvShow: Californication Title: Grace Season: 7 Episode 12