":Of the latinos in the town I grew up in, most are southern Mexican (not sure what it would be at now). In any case, in my early teens during the first wave of break dancing, I exclusively hung out with Latinos in my town and learned their dialect (my dialect is Salvadorean) and pinche was used as fucking (not the sexual act of). Maybe its use/meaning/vulgarity varies between regions. 

 :Examples: 
 :""¿Que le pasa a este pinche guey?"" -> ""What the fuck is up with this guy?"" (Lit: What is wrong with this fucking guy?) 
 :""¡Sacá ese pinche carro del garage! -> ""Get that fucking car out of the garage!"" 
 :""¡Dame un pinche dolar!"" -> ""Give me a fucking dollar!"" 

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