The Pride Resource Center at Colorado State University has deemed the phrase “ladies and gentlemen” a “transphobic phrase” and is warning students about uttering it. They’ve created a poster campaign for the campus as well as stickers to raise awareness about the issue.

The poster is titled “Tips for Supporting Transgender People” and lists other “transphobic slurs” such as “real women/men,” “What’s your real name?,” “transgendered,” and “You don’t look trans.” It says all these phrases, including “ladies and gentlemen,” are “extremely degrading and designed to harm.”