Bad Boy Entertainment Sued By Unpaid Intern -- HOW DARE YOU MAKE ME GET COFFEE?!

Sean Combs is a corporate tyrant who had the audacity to force an unpaid intern to ... gasp ... GET COFFEE ... this according a new lawsuit obtained by TMZ.

The ungrateful person behind the suit is Rashida Salaam -- who claims she took a gig as an unpaid intern for Bad Boy Entertainment from January 2012 to May 2012 and couldn't BELIEVE the kinds of work they had her do for free:

-- answering telephones
-- getting lunch and coffee for paid employees
-- making deliveries
-- gift-wrapping presents
-- decorating the office during holidays

Just torture ...

Salaam probably has a real case, thanks to recent changes in the law regarding unpaid internships (no more free labor for course credit) ... but we're guessing she's probably hurting her chance at landing a full-time gig with the company by filing the suit.