Spotted...

I had to bite my tongue this morning. Pulled up alongside a girl on Knightsbridge, riding a hybrid set up so low that at first glance I thought she was a child or a midget. She wasn't all that big herself, but the bike was far too small for her, and she had the saddle right down, so that her knees were sticking up higher than her hips when she pedalled.

But I couldn't think of anything to say that wouldn't come across as smug and/or interfering, so I just left her to it.

Big difference between being helpful, and being a patronizing twat.