He was a baaaaaaaaad driver.
or
Woke up in the fireplace.
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
1,622. One to tell the original joke, and the rest to submit give some minor variation of it! For example:
or
It left its tracks.
or