@geekygirlsarah helped start a trend called #speakerconfessions. I just submitted mine. In 2016 at Tulsa TechFest I gave two talks back to back right after lunch. I was congested at lunch so I took an antihistamine and drank a bottle of water. During my talks I always drink water. So,during my first talk I drank another bottle of water. Then, in between sessions, I went to the bathroom. Well, 20 minutes into my 2nd talk I had to leave to pee again!