The very first time I got an erection it was after a primary school swimming trip.  This meant walking in a crocodile across town with Mr R our large hairy teacher, to the old local town pool.  It was an old victorian style thing with changing stalls all around the perimeter.  For some reason I was dithering about and was hurrying to and from the boys stalls looking for a space.  I accidentally walked in on Mr R as he was dropping his trousers and pants.  If my imagination has elaborated the memory at all it is only because it has fascinated me so.  His large fleshy penis uncoiling from his pants and dropped loose, swaying like heavy meat.  The large businesslike nuts, slowly descending in the great baggy scrotum behind. Stupendous great bollocks clouded in the musk of male adult groin. The great leathery objects nestling in a wild mass of dark pubes

I've always taken a delight in remembering his enormous cock.  Semi hard, with the foreskin rolled half back over the glans.  The slight bob and sway of a semi awakened penis.  It was not long after I first noticed this legendary phallus that my own willy started stiffening.  Hardening to the thought of a monstrous inseminator of great big tits and ass adult females.  A monstrous tool always swelling beneath the fabric of a trouser leg.

And thereafter, I noticed what I had never noticed before.  Something that I have always taken great pleasure in scrutinising ever since.  I noticed that the size and shape of his giant dick were easily discernible through his trousers. 

 The thought of his great hairy bollocks slapping against my ching as he pumps loads of sperm through his outrageously handsome penis into my mouth has been held before my minds eye during many an orgasm.  Mmmm to be drooling that spunk