whats a fake script called la something

The “fake script” you’re thinking of is almost certainly a “spec script” (short for “speculative script”).

In TV and film talk, a spec script is:

• A script written on speculation that no one has paid for yet, hoping it gets noticed or sold later.

• Often written for an existing show as a kind of “fake episode” to prove you can match its style and characters.

In TV, people literally describe it as “a script that somebody writes a fake episode for” – that’s exactly how a spec is explained in forum discussions.

So if you’re asking “what’s a fake script called, la something?” you’re almost certainly reaching for “spec script” , not a slang “la-” word.