Most coppers of my aquaintance treat it all as a bit of a laugh between themselves and try quite hard to keep a straight face when dealing with the public. Real Criminals they treat differently but your average middle aged speeder or drink driver is more likely, if co-operative, to get a smile and a bit of banter. What they don't like is arguments. What they do like is "Yes sir, sorry sir, anything you say sir". Arse kissing is an art that they are forced to practice daily on their superiors and they like to get a bit back.