If I was a landlord, would I lick my housekeeper and fuck her without a condom? I think no, I would fuck her hard enough in the front and in the anus, and periodically I would call her into my office for gentle and unhurried blowjobs! And gentle fucking and licking? You have to admit it's too much!
Girls got excited while riding stallions, so it's not surprising that when they saw those guys they jumped on them. Well, their chosen pose is exactly what I pointed out in the previous sentence. It has always been a mystery why so many girls love horses, actually this video partially answers this question.