TragicWhiteKnight: [quote author=Max link=board=meetgreet;num=1055961875;start=0#16 date=06/30/03 at 06:56:56]
A third factor (high level of testosterone?) linked medically in some way to both size and sex drive.
Or, what about the sheer mass and weight of very large tackle pressing on your awareness all the time? for instance I'm sure that half the problem I have always had with frequent erections has been the fact that just walking down the street tends to set up a heavy rhythm bouncing around down there.
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I'm in favour of the second, partly from personal experience. Back when I was going through puberty (from 13-14ish), being pumped through with as many hormones as boys can take, I was never especially horny; now that I'm fully grown (or maybe not, fingers crossed for another tenth of an inch or so, so I can be a full 11"...), I find myself a lot more aware of my cock, so sexual stimulation in general. Some of this is to do with the practical reasons you suggest (bigger cock = more area being rubbed, more careful dressing etc.) but also, I'd guess an element of social-cultural factors - because having a big-dick is prized in sexual terms, it makes its owners more likely to think in those terms. That's just my opinion, I could be wrong; okay, I'm normally wrong, but this time I don't care about being called on it.