a pelo: sin protección, ayuda o preparación. [Como el pelo de un caballo, sin silla].
-Nunca he montado a pelo — I've never ridden bareback
-Me la follé a pelo — I shagged her without a condom / We had unprotected sex
-Suelo beber el whisky a pelo, no me gusta estropearlo con agua — I usually drink whisky neat/straight. I don't like to spoil it with water
→Suelo beber el whisky a palo seco
-Arrancó el mejillón de la roca y se lo comió a pelo — He yanked the mussel from the rock and necked it (just like that)
-No voy a tomar nada. Prefiero pasar el mono a pelo — I'm not going to take anything. I'd rather go cold turkey
-Lo operaron a pelo, sin anestesia — He was operated on without anaesthetic
