I am sure there is a treasure trove out there on the internet, but a quick Google search did not turn it up...
So this morning I left Future Cyclist with his nanny and got on my bike to head to work. Very first stoplight a cyclist pulls in about 2 cm from my shoulder. YIKES! I startled, and all I could think to say was "oh, hi." Later he passed me at the next red light, and then I very loudly said "On your left!" as I dropped him on the bridge.
Always too late at this sort of thing I thought later that what I wished I'd said was something more like "I don't usually let a man get this close to me 'till I've got his phone number" or something like that.
Witty people, or people with better Googling skills, what could we be saying in these situations, something that indicates no-harm-done but next time say something!?