Well, Japanese people just think that body functions are.....well...just normal body functions. Western people (particularly English people.)are a bit embarrassed with toilet habits.
Before I got married I had five Japanese girlfiends. ...(Not all at the same time you understand.) but they all were happy to pee for me..on me. in my mouth, in containers etc
My wife will do it for me if I ask her to but I don't ask her too often though in case she gets bored with it....she's not really 'into it'. I usually ask her when I'm stoned and had a bit of the 'herbal stuff' and pissed........
Anyone else has cultural comments?