Cop with hat tucked under arm to K-9 dog: Arooo-ooo-ooo!
K-9 dog: Ooouu-ooo-ooo!
Cop: Ouw-ouw-ouw!
K-9 dog: Arooo-ouw-ouw!
Cop and K-9 dog, in harmony: Ouw-ouw-ooooo!
Old man, putting $1 in cop's hat: Excellent. –Times Square Overheard by: Thomas