The line comes from Do You Want to Build a Snowman, the opening musical number in Disney's 2013 animated film Frozen. In the film it is sung first by young Anna, voiced by Katie Lopez, as she tries to coax her sister Elsa out of her room over several years. The song became one of the film's most quoted moments, and the opening question is still reused online every winter as shorthand for a hopeful, childlike invitation.