I think is safe to say that we all have been in this unconforable situation. The situation in which we mus (emphasis on the must) use the restroom.
When your body (or bottom) says here it goes there is not stopping it. No matter what you do, how you seat, the feeling of "I have to go" wont go away.
Today I was at work and that feeling sriked. I was having a conversation with a co-worker and I had to suddently stop and run. Uhm,. it was back.
And Oh! that felt liberating. The feeling of emptyness that one feels after.