Where I used to live the main post office was by some traffic lights. If you timed it right you could pull up at a red light post your letter and be ready to set off when the lights turned green.

I pulled up kicked the side stand down and jumped off. The side stand wasnt properly down and the bike fell on top of me trapping me against the kerb. By the time I had crawled out from under it, lifted it up, posted the letter, I had missed the green light. Needless to say I also had an audience watching and laughing