While most people have come out to praise Justin Bieber 's new song, " What Do You Mean? ," Lena Dunham has taken to Twitter to criticize the Biebs for his lyrics. She wrote Monday, "Let's do away with pop songs where a girl nods yes when she means no and vice versa, k?," . Here are the actual lyrics: "What do you mean / When you nod your head yes but you wanna say no / What do you mean?" After receiving a ton of backlash, Dunham turned to Instagram to maybe say that she didn't have a problem.