I held my pee since this morning (didn't pee when I woke up) and just took a shower and let it all out while I was standing there. Since my stream usually goes straight down, I have to arch my hips back to aim a bit, so I aimed right at the drain and peed all over the shower door, couldn't quite arch high enough to get the door handle or anything, but I peed in every part of that shower. It was super relieving, and I can't wait to do it again.