This commercial, addressing the use of slurs, specifically “That’s so gay” is set to air during Sunday’s Super Bowl.

The Gay, Lesbian & Straight Education Network (GLSEN) will share its new PSA campaign targeting anti-LGBT language among teens with Super Bowl attendees at Indianapolis' Lucas Oil Stadium on Sunday. The award-winning "Think Before You Speak" campaign features stars Hilary Duff, Wanda Sykes and the NBA's Grant Hill.

From the Ad Council…

Almost 90% of lesbian, gay, bisexual and transgender (LGBT) students report being verbally harassed at school because of their sexual orientation. LGBT teens experience homophobic remarks and harassment throughout the school day, creating an atmosphere where they feel disrespected, unwanted and unsafe. Homophobic remarks such as that’s so gay are the most commonly heard; these slurs are often unintentional and a common part of teens vernacular. Most do not recognize the consequences, but the casual use of this language often carries over into more overt harassment.

This campaign aims to raise awareness about the prevalence and consequences of anti-LGBT bias and behavior in Americas schools. Ultimately, the goal is to reduce and prevent the use of homophobic language in an effort to create a more positive environment for LGBT teens. The campaign also aims to reach adults, including school personnel and parents; their support of this message is crucial to the success of efforts to change behavior.