LOL, yeah. I have similar memories. Apart from the inherent implausibility of a bloke in full plate mail whopping out his meat 'n' two veg and jumping poor old Ygraine missionary style, there was also the slightly embarrassing problem that the mere glimpse of an exposed nipple was enough to evoke a boner for me at the tender age of 13. There I was, desperately imagining Maggie Thatcher naked, hoping against hope it would be enough to suppress the bulging beast before my mother noticed the trouser monster stirring in its lair......
So you got a boner when you saw Patrick Stewart's cock? Man, you've got more girth than me. Just sitting by him was enough to make me cream myself....