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'.”
(..) and machine guns? Why don't you just tell me? I was about to...right after you speech. - Gwen, honey, family photo. - Okay. You coming to dim sum? You can't keep me away. - It's at eight o'clock. Don't be late. - OK. And I am going to do my speach for you. (..)2014 The Amazing Spider-Man 2