Complete the Joke...

[vampiro]

I read some examples of copywriting jokes and they are really funny. Now I am looking for individuals with high sense of humor to complete this challenge. A challenged to finish this joke:

A copywriter and his dog walk into a bar …

I can't find my own version for now. But maybe you can. I found this funny.

A copywriter and his dog walk into a bar.
The bartender, busy cleaning glasses, looks up and sees a thirsty mutt by his master.
“Sorry I’m afraid you can’t bring your dog here.”
“Why not?”
“No lead.”