One has claws at the end of its paws and one has a pause at the end of its clause
or
Three skunks fighting over a pickle
First dog: My master calls me Furball. How about you?
Second Dog: My master calls me Sitboy
or
Fish and ships.
or
The barman says "Sorry we don't serve food in here"
or
Sure, Dick and Bob had a bunny!
or