Bizarrely while i opened Udo Andre’s answer from notifications, I didn’t increase the risk for obvious sexual connection until about para 5 !
I’m guessing it’s while there is an extremely old and overweight heavy draught horse, called Magic, inside a field a couple of miles away from us. We may feed him the odd apple or carrot whenever we saw him. He was notoriously grumpy and kept his distance in the locked access gate.
Whenever we first took our eldest and emotionally damaged ‘granddaughter’, there was the gravest misgivings while he walked straight away to her and eat from her hand.
His owner first saw her feeding him and, although worried, (with great care), allowed her to penetrate his field. But he stood stock still and permit her to groom him with your ex hands. She eventually gave him a huge spread arms hug and stayed that way for a long time. The property owner was incredulous as Magic would have been a rescue and has an extremely bad temper having broken her arm and bitten her several times! He’s a sizable horse. He towers above her using a girth that belies belief. My granddaughter is just 5ft 2in, he’s Much taller, which has a back which is as wide being an armchair!
Four years later, whenever she goes to see him, he literally gallopes to her, seemingly making the soil shake, and waits whilst she gives him huge hugs (well she spreads her arms wide apart looking to cuddle him round his neck but they don’t even go halfway round), and then scratches him throughout as much as she’ll reach; since then we’ve been back more often than not to dicuss and cuddle him.
He never moves until she says goodbye and kisses his nose. She says she just thinks lovely thoughts about them and “knows he understands”. That is intercourse having a horse inside the real sense.
Regarding sexual activity between horses and humans. Easily remember correctly, it apparently was a good crowd pleaser in the later Roman Games, I wasn’t around in those heady days but read “Those About to Die” by Daniel Mannix . Prostitutes and other woman criminals were strapped to a wooden horse’s buttocks and also the stallion let straight into enjoy himself. The length of time over survived was the topic of intense betting. Their gambling was well organised and efficient. It turned out much more of a place of interest than “water boarding”, when a woman was force feed water with the gallon then the board placed across her stomach to hold brave men until she rush. Gambling has lost plenty of followers since those heady days !!!
For more info about horseporn see this useful site.