Remarkably each of these 4500 men mated with a woman, who produced a son that survived drought, famine, ice ages and woolly mammoths long enough to grow up and mate with a woman, who in turn produced a son, and so on until the day your father in a moment of passion, did the unthinkable, and you were conceived.

Our way of life has changed so radically in recent generations, that it is difficult to imagine what the lives of that long trail of men were like in the days of hunter gathering when there were more Neanderthals around then men like us. One of the few things that hasn't changed in all that time is the way we use our dicks. Although in all probability larger than those of our ancestors, our dicks act and react in exactly the same primitive way. There to perpetuate the species, the penis has been extremely efficient.

Few of those 4500 men were in loving monogamous relationships when they conceived their sons. Emotionally geared to spread their seed as widely as possible, so as to ensure their genes were passed down to the next generation, the majority of our forebears were no doubt super sluts. And you thought you were the only one?

What did the victor of all those petty wars and skirmishes between ancient tribes do? Pillage, plunder and rape. The adrenalin rush that a man has when he violently overpowers an enemy can result in a hard to ignore hard-on. What better way to dominate the enemy than to force yourself on their women, fuck them silly, and so spread your obviously superior genes ever more widely? Your most potent personal weapon, your dick, becomes an effective way of overwhelming an opposing clan by populating it with your offspring.

Imagine a tatty hoard of primitives bearing down on your little community, each man waving a club and his penis; one weapon as potentially dangerous to the future of your clan as the other. A man with a large penis could appear to be sexually aroused and therefore anticipating victory. Scary, better turn tail and retreat. Maybe not such a good idea, your bobbing bum could be as tempting a target for that hardening dick.

Could this be the origin of the size-queen? Are we genetically primed to value large dicks because they are more likely to intimidate an opponent? Is this also the origin of circumcision? The foreskin of a sexually aroused man rolls back. What better way to scare off an enemy than to rush at him with a dick trimmed so as to appear aroused?

These hangovers of our primitive past don't have much relevance in today's world, but they do persist. A perpetrator of a violent crime can find himself irresistibly, and inappropriately, raping his victim with a penis programmed for a long-gone age.

In our over populated world it is also no longer necessary to spread our genes as widely as possible. Take this as another reason that a gay man has evolved beyond his straight brothers. We have instinctively seen the light. Queer men still fuck like rabbits, but the purpose is sensibly no longer geared towards procreation.

The odds are that you won't have a son of your own. If you don't, you will be the end of a line. Don't panic; think of yourself as the culmination of a long journey, the mountain peak that those 4 500 ejaculations were aiming for. Give yourself a round of applause; you are the end result of a long line of winners. Better make sure you are worth all that effort.