Re: paruesis, for me it's not because I'm self-conscious, about modesty or worried about dudes looking at my junk. I don't even know what it is, but I tense up at the idea that someone might burst in for some reason. Maybe it's because it's a vulnerable position with your back towards someone and your pants down.
Serafín wrote:ciclán - missing a testicle
Spanish also has tuerto,a 'missing an eye', and then there's also the Salvadoranism cuto,a 'missing an arm'. Curiously, I don't think there's a word for 'missing a leg' in either the standard or my dialect.
In English, there is the medical term monorchid
for having one testicle, but I don't know of a term for missing an eye other than "one-eyed", and don't think there is one for missing an arm other than the generic "amputee".