I 've never ,ever seen this before. All the time I've seen only "a lot" or "lots of" . This appears in an example of the word "lot" in my dictionary. After I tried to understand the meaning of it now I'm still unsure if it means "all of you" : Get out of my house, all of you !Get out of my house, the lot of you !
I still want to confirm again that I've never, ever seen this way of using "lot" together with the article "the" . I don't know if this is typical or not for native speakers, but I've never heard people say it before.
Thanks : )