I know, what the fuck? I don't claim to be the first person to come up with this, but I've never heard of it before.

Get clean, naturally, piss in a cup (as may times as you want) and freeze your clean piss in an ice cube tray. Put a label on the bad boy (hopefully saying "DO NOT CONSUME") and have clean piss whenever you need it.

This is probably more effective for girls. Thaw a couple cubes, heat em up for about 15 seconds once thawed (I've nuked piss before, it's fine) and put them in a small bottle that can be inserted in your "hoo hoo". I've done it before, works good.
I'm a super-smoker, but since being put on probation, I can't smoke. I pissed dirty once, and I already have a show cause (which could mean 10 days in jail) so I've decided to just stop. I'm sick of going to my non-smoking friends to get piss.

I just wanted to put the idea out there and get some feedback. I know pee will stay fresh for around 3 days in the fridge, but I'm sure the shelf life in the freezer is much more than that.