Kid Cudi responded to social media users after facing criticism for painting his fingernails. Unbothered by their unsolicited opinions, he told critics that if painting his nails is problematic for them, they should stop buying his music. On Saturday, the 37-year-old rapper posted a picture on Instagram of him throwing up the peace sign with orange and blue nail polish on his fingers, Buzzfeed reported .  View this post on Instagram A post shared by Willis (@kidcudi)