Geez, you guys are awfully nice. My stock response goes something like "Either ticket me or don't because I've got places to go and things to do. Now get on with it and spare me the lecture." I get surprisingly few tickets, and I fight each and every one. I think I've paid a grand total of like $80 in fines since I started with this policy.
I don't think I've made a lot of friends on the force, though.