Sorry for south-american Spanish speakers but cuño is just a big fucking spelling mistake, the only non-Castlillian menaning of coño are "stingy", "individual" and "Spaniard" as referend in Chile, Venezuela and Ecuador (Spanish Royal academy of Language certified).
For further use of the word, sufix can be added such as ~ito, ita, azo,...
"carlota, eat the chicken's cunt"
Deja de arrascarte el coño
"Stop scratching your muff"
In setting, you are undressing a GIRL and she's got the biggest cock hanging out of the pants, then you agonize and scream "coño"!!!!! while crying and running away of course.
Alternatively, you pick up a smoking hot girl in a club, and she is easy, so lose she finds hard to keep her legs closed, you of course know she might have more AIDS than are known to man, but a condom will do the trick, then once u are alone with her and on business you realize u run out of condoms, then you are rightfully in the situation to scream "coño ostia puta joder!!!"
<Pain> (Hammer falls on foot) Coño!!!
<Juliet> (Juliet awakes from potion)
<Romeo> (Takes Poison) Coño!!!
Christopher Colombus : (sees america from afar) Coño!!!! Tierra!!!
Cubans in particular may also abbreviate it to "ñoo" when used alone, equivalent to USA's slang "daaaium" or "deeeeim".
"Concho" is a distorted softer version as "darn it".
(Damn, that is good)
(Study, damn it...)
Que coño es eso.
(What the hell is that)