The idea of horns, in this case, comes from the word "cuckold" see your OED: pre-15th to early 18thC everyone--except the husband--could see the horns growing out of his
head (sort of
like the "emperor without his clothes" story).
Much of the unicorn mythology ties into this as well. The
horn and mysterious erotica is fascinating.
"Horn" is antlers; "horn" is masculinitly; "horn" is the erection; "horn" is also the sign of emasculation, specifically when every one but the husband sees them on the husband's
head.
In this sense, it must only =
horny guy (tight balls and potentially losing his lover to another man/woman)???
I'm new to this site, and I have been told I must back up and give an example??? I'll try.
See above.
Continued...
I just deleted an hour's worth of what I was going to say.
I teach, and I'm in the middle of marking hell; this was my
break for the
evening, and I messed it up.
kk.