^ I used to get bad urinary retention on smack too, usually when my tolerance was low but it hasn't been so bad since I got off ost. Bupe and methadone were terrible the whole time I was on them and the constipation on methadone was debilitating, I used to have to eat half a kilo of prunes every three days just to be able to go two's without feeling like I was being reverse raped, it was fucking awful. I've found that pissing outside seems to make going much easier, not having to worry about aim and removing all the slightest anxieties (like going in front of my girlfriend which is usually never an issue even though some people think its gross, we've been together for 5 years so all the mystery with that stuff is long gone) makes it much easier. My flatmate has pererisis (sp?) which is an anxiety about urinating in front of or around people, it's so bad that he won't drink any fluids until about 3pm so he doesn't have to go at work because he quite literally can't. He spends his lunchtime sitting in a cubicle at work waiting until no one comes into the toilet just so he can go. It's really affecting his life in a big way and he's currently getting therapy to try and fix it. Poor guy, he's always had strange social hang ups but this not only dominates his daily routine but must also be really unhealthy for him, not drinking all day can't be good for you.
Also I don't know I many of you guys pick up from the well known open air spot just to the east of Melbourne city but if you do be really really careful, there's a big undercover blitz going on at the moment and people are getting busted left right and centre.