I frequently stop on two feet. I see it as a form of communication. The safest thing you can do on a bicycle is be predictable - what ever you're planning on

I frequently stop on two feet. I see it as a form of communication. The safest thing you can do on a bicycle is be predictable - what ever you're planning on doing, look like you're planning on doing it. It's just signalling, but expanding "wave your arms around" to whole-body language. Stopping on one foot, with the other on the drive side ready to go, says I'm ready to go. Standing on two feet makes it clear I'm stopped, and going to remain stopped while I'm in this stance. It works out - if whoever I'm waiting for has to brake because they think I'm about to kill myself, they take longer to get out my way.