I dunno man, might wanna get that checked out or something. It's never burned when I've peed, 'cept there was kinda this time when I was high and had eaten a little bit of shrooms and taking a piss I'd held in for most of the day felt like all of the bad toxins in my body being drained. I felt much better afterward, then drove to Taco Bell and got me a couple of those half pound beef burritos. Whoof, I gorged myself. Good times.