Conversation so far:
When was Louis C.K. born?
09/12/1967
Where was Louis C.K. born?
Washington, DC.
Is there any information about Louis C.K.'s' parents?
Louis C.K. is the son of software engineer Mary Louise (née Davis) and economist Luis Székely.
When did Louis C.K. start comedy?
Louis C.K.'s first attempt at stand-up was in 1985 at an open mic night at a comedy club in Boston, Massachusetts, during the apex of the comedy boom.
What was Louis C.K.'s first job as a comedian?
As Boston's comedy scene grew, Louis C.K. gradually achieved success and eventually he moved up to paid gigs, opening for Jerry Seinfeld and hosting comedy clubs.

Question: what was his first job?
Self-contained rewrite: What was Louis C.K.'s first job?