cabron

The old adage is: to put the horns on, or make a cuckold of. See Shakespeare. This refers specifically to a wife cheating on her husband. The hand gesture of this is using extended fingers to mimic horns on the forehead. The infamous "goat" sign. Cabron => goat => having the horns put on. The hand gesture is the first and fourth fingers extended, the others tucked in so as to make horns at someone. "Horned" is the term for "cuckold/cuckolded" in Latin countries where there are a gazillion jokes about poor, predestined husbands named Cornelius. "Keras" in Greek and "cornu" in Latin were metaphors of power, strength and domination since stags, rams and bulls were all horned and showed those qualities. Later on, both "keras" and "cornu" came to be slang terms for the penis in Greek and Latin, and "corno" still is in Italian. To put the horns on a husband is not only to be his sexual surrogate, but also to reduce him to a passive and ineffectual role.