The other day as I was sitting in the back of the cop car while the officer was going through my car looking for pot he wasn't going to find, I kept thinking of the KQRS morning show bit they play all the time called "Yo Mammy". It is a classic piece of actual arrest audio and I highly suggest you give it a listen if you have never heard it before and need a good laugh. Do it for me and my good friend Officer Tackleberry.. I only wish I could have said such kind things to him!
http://media.radcity.net/kqrs/morningshow/yomammy.mp3
(Caution - it contains naughty words, so if you're in a crowded office or around sensitive listeners, you might want to turn those speakers down a little bit)