Hahah, that's cool. I haven't experimented with it myself but I've read a fair bit about it over the years. It is used fairly regularly in the underground cannabis growing community, for example. Urine is relatively clean (assuming the person doesn't have an infection or something) and is essentially just plant nutrients. There's no fertilizer left on the finished product, anyway.
I tend to compost my kitchen scraps, and being vegan, there are quite a few scraps that can be composted. Each year I end up with a good bin full of black gold to spread into the garden. I will mulch with the autumn leaves falling into the yard right now, so by spring I should have a good garden patch for growing my veggies etc :)