Retarded mut dogs which are sexually exploited by homely woman. They’re often referred by the name of randy or prancer, for their unique oral skills.
"I think the only thing that lady is laying tonight would be a lap dog."
A person who is subservient brown noser to an organizational superior; someone who obediently follows authority figures without regard for their own interests or principles.
From the musical "RENT", when Maureen describes Benny:
Then a little bulldog entered. His name, we have learned, was Benny. And although he once had principles, he abandoned them to live as a lap dog to a wealthy daughter of the revolution.