Tips On Pissing Off Beyoncé from Mindless Behavior

Here's a piece of advice that lots of artist can stand to take. Never bash an artist who has a lot of fans, or one that is constantly listed as an inspiration by other artists. Especially if they are Beyoncé.

In case you missed it, some boy band (that I'd absolutely never heard of) threw some massive shade at Lauryn Hill's unfortunate tax situation. Lauryn could potentially face jail time and some humongous fees for tax evasion. It just so happened that they were presenting an award to Beyoncé who has constantly cited Lauryn Hill as a source of inspiration in her youth.

According to TMZ, after Beyoncé changed up her speech to shed some light on the positive things Lauryn's done for the music industry, she went on a short rant backstage about how disrespectful the shot at Hill was.

I guess we won't be hearing from them anytime soon.

Sidenote: Bey took home two awards, including one for Best Director! 

Beyonce wasn't laughing when a boy band DISSED Lauryn Hill at last night's BET Awards ... in fact, Bey was so upset, she changed her acceptance speech (on the fly) to HONOR the former Fugee. 

So let's start with The Diss -- Comedian Mike Epps and the group Mindless Behaviorwere co-presenting the award for Best R&B Artist when Mike jokingly tried to sing. 

One of the members of the group quipped, "You sing BAD ... like Lauryn Hill's tax accountant bad."

The diss drew gasps from the crowd ... and pissed off Beyonce, who ultimately WON the award that was being presented.  

But TMZ has learned ... B was so upset, she scrapped the speech she had prepared and defended Lauryn's honor instead ... saying, "I want to thank all the talented R&B women that came before me like Lauryn Hill and Mary J. Blige."

When B walked off stage, there was a woman waiting for her -- possibly a BET handler -- and B began to vent about the insult, saying the Lauryn Hill diss was "disrespectful" and "not cool."

The woman complimented Beyonce for adding Lauryn Hill's name to her acceptance speech ... to which Beyonce replied, "I just felt [the diss] was wrong."

We called Beyonce's rep for comment -- so far, no word back.