Sume has two common meanings;
A sume is the popular term for any aural, visual or sensurral work which can be sumed.
To sume or suming is the act of consuming a sume.
A prosumer is someone who is both a producer and consumer of sumes, but seeing as almost every SlabCitizen is a prosumer of some kind, the term has fallen into disuse.
- or any combination of these