The art of of shutting one eye and squinting whilst watching Japanese pixelated porn, just to try get a better view of the cocks, clits and lips.
Dude 1:
"Bloody hell... Dave has only gone and got a permanent squint in his eye, The Doctor reckons his condition came from watching pixelated Japanese porn for six days on end"
Dude 2:
i think he has got The Japanese squint