I've pissed in many toilets, a handful of showers, a lot of mop buckets, and probably 10 sinks or so.
I've also just pissed my pants while passed out, pissed my bed, and also pissed all over my room and one time even on one of my guitars.
now that I don't drink (well, never get drunk), and don't do G - it is odd that I tend to only piss in the toilet and shower (when showering) now.
one time where I was living two places ago, my dickhead housemate wouldn't get out of the shower, so I pissed all over his dishes in the kitchen sink.