By Ariana Bacle
Updated October 02, 2015 at 07:20 PM EDT
Credit: Shirlaine Forrest/WireImage

Chvrches‘ Lauren Mayberry was just minding her own business, playing a show, doing her job, when a man in the audience shouted, “Marry me?” And she didn’t just say no: She also confronted him about his methods.

“Come on. What’s the hit rate on that when you go to public places and ask women you don’t know if they want to wed you?” Mayberry asked from the stage. “Does that work out well for you, sir?And also, I assume, cause you’re here, that you know about our band, and I’m very grumpy. I don’t want that s—.”

Mayberry has been outspoken about facing sexism before, writing a 2013 op-ed for The Guardian and addressing it frequently in interviews and her Instagram. “What I do not accept … is that it is all right for people to make comments ranging from ‘a bit sexist but generally harmless’ to openly sexually aggressive,” she wrote in The Guardian. “Is the casual objectification of women so commonplace that we should all just suck it up, roll over and accept defeat? I hope not.”

Judging by Mayberry’s response to the marriage proposal, she’s definitely not rolling over and accepting defeat. “Thank you everybody else, sorry for shaming that one person,” she went on at the show. “But if nobody tells you, you’re not going to know. And luckily for me right now, I have a microphone, and you don’t.”

Watch the full clip below.