This voiceover has a long history. To begin with, let's say that the singular masculine "light helmet" applies to someone who is groggy, informal, in many cases inconsiderate, and is a euphemism for "hollow head", or also for its variant "uncooked" ("who lost his head"). And of the latter we have an interpretation in feminine ("descocada") specifically for "woman who lives a free, promiscuous sexuality", which can also be "light helmet". . . but the popular macho ingenuity gave it another twist, and associating the woman of libertine behavior with the "mare that hurries the step, and does not follow the rhythm of the troupe" -which is light- invented the variation "light of helmets", in this case not by the meanings of "slight, hollow" and "skull, cover of the head", but by "fast" and "hoof of the horse" respectively. It has in turn its own euphemism as casquivana, which is also related to other locutions with double meaning such as "take the wrong step" ("err the way, and in this case the moral" ). See "mark one forty a mile", take .
