Let it be known that it's best NOT to get on Natalie Nunn's bad side.

Natalie Nunn is the latest celebrity to be pranked on the hilarious "Celebrity B-Roll'd" reality prank show, and her reaction to the scenario was priceless.  The "Bad Girls Club" star was set up to audition for a scam commercial for Frosted Flakes, and had to read ridiculously vulgar lines as part of her audition.  While Natalie began the audition with a very sweet, friendly, and professional demeanor, things got real heated once she was informed that an autograph she had previously signed was actually a bogus contract for the commercial which stated that it would only pay her $125.

Once Natalie was informed of the scheming business deal, she flipped the script and turned up real quick letting everyone know that she truly is a "Bad Girl" in real life.  Check out this epic prank above.