Tegan & Sara

From the band's official bio...

With Tegan and Sara you can never really be sure what is going to come out of their mouths. Their first word as babies was a four letter one according to family legend, and since then the only thing that's changed is that now people pay to hear what they have to say. If you want to hear their legendary onstage stories along with some new four-letter words, buy a ticket to their next live show. If you simply want to hear the power, precision, and originality of their lyrical and musical vision, then throw on their brand new album – So Jealous (Vapor/Sanctuary).