Among the various contributions that appear here I think that all the meanings are already covered. Even so, I take this opportunity to clarify some misconception: it is not that 'sieso' is something of little value; is that the phrase "I care about a sieso" is interpreted as "I care little", and the literal meaning is "I care about an ass", a construction equivalent to so many others that are reinforced by using sluts such as "I care about a fuck", "I care about a shit" or "I care about a cushion", where none of those words are synonymous with trivial or insignificant outside the context.
Sieso: from the latin sessus, participle last of the verb sedeo is-ere, sedi, sessum, be seated, sit is, remain. As colleagues say this word defines the unfriendly person, unpleasant and repellent character and bad milk. Also is the year in its part external and internal, a last name originating from Aragon and the name of some populations of this area of Spain as Sieso of Jaca in the pre-Pyrenees hoscense.
