this toilet is at the AMk central, beside the Seoul Gdn.
Its supposedly a unisex toilet - with a urinal and a cubicle
inside.
Say if a gal uses the toilet, she would naturally enter the cubicle
of course.
but we all won't have the habit of closing the toilet main door
(unless it would auto-close)...
then one guys comes along to use the toilet, he would naturally use
the urinal (but closes the main toilet door)...
Then the ger comes out, after finished her biz.
Interesting is that the urinal is just right in front of the
cubicle door 
(if the timing is "right", she might just get to see the guy
shaking his dick n stuffing it back into his pants)