Can I surmise that phrase is big in Japan?
It's big with me.
I find the Japanese don't bother much with metaphor or subtlety with bodily functions. "Unko ga shitai" is in common use, which means....... "I need a shit". See, no subtlety at all.
Can I surmise that phrase is big in Japan?
Once worked with a guy ( he was gay ) who used this term. His version was clearly about going up the gary glitter !!
Oh christ. I just thought Donald Trump Dump. I now realise why I've had some odd looks over the years. On the plus side, it also explains why a nice waitress surprised me after following me to the gents.