Three convicts escaped from prison.

They made it to the downtown of a nearby city but were confronted by a policeman.

"Hey, aren't you those three escaped convicts?", asked the policeman.

Thinking on his feet the first convict looked around him and said "No, I'm Mark, Mark Spencer".  The second followed his lead and said "My names is William, W H Smith".  The third said "My name is Ken.....Tucky Fried Chicken".