At school we used to swap porn on floppy disks... There is nothing like a picture of a naked woman in good old lowres HAM-6... I say nothing like it, because It was often difficult to really make out what was going on with so few colours at such a low resolution... one's imagination was vital to the whole sock based operation...
-edit- ah yes... Is that pixel a nipple or a mole... Or maybe a HAM artifact...? :-D