One reason why this was his pet perversion was the physical shape of his prick. Tapered the way it was, his cock seemed to have been fashioned expressly for such a task, the pointed cock-knob leading the way for the thick shaft, casing the entry. If a man had a tool designed for a certain job, it seemed only proper that he use it for that job.

But there was another reason for his inclination towards the nether entrance to a girl's loins.

Claude had ass fucked his sister when they were teenagers.

It had been the best sex that he had ever had, far better than either of the ugly women who had provided him with pussy and Claude had longed for another chance to bugger a girl. He had been in junior high when his older sister had suggested it.

His sister had not been perverted or depraved, however. Quite the opposite, in fact! She was a wholesome, chaste sort of girl who wanted to retain her virginity for marriage and who would never have dreamed of committing the unspeakable sin of incest by letting her brother fuck her cunt. She was also a fastidious girl who found the thought of sucking on a mouthful of cock most distasteful. Thus, because of her purity, there was only one thing left for them to do and she invited Claude to bugger her.

They had both enjoyed it enormously.

She would kneel before him, clawing at her cunt, while he plunged his prick up her ass and filled her bowels with ball juice. They fell into the habit of fucking this way, and then did it several times a week for a year or so. But then his sister found herself a boyfriend and lost her cherry and even became indelicate enough to take it in the mouth, and poor Claude was left without a single asshole to bugger.

He had yearned for some ever since.

He liked to look at the nubile schoolgirls as they strolled through the corridors between classes. He admired their tits and bellies and legs, too, but most of all he adored their asses.