"Luke!...We have to be able to do cool dancing so we don't embarrass our child!" "I'm a very cool dancer," replies Luke. "Very cool indeed," "No you're not!" "I had dance lessons in my teens, you know," he retorts. "I can waltz like Fred Astire." "Waltz?" I echo derisively. "That's not cool! We need to know all the street moves. Watch me." I do a couple funky head-wriggle body-pop maneuvers, like they do on rap videos. When I look up, Luke is gaping at me. "Sweetheart," he says. "What are you doing?" "It's hip-hop!" I say. "It's street!" "Becky! Love!" Mum has pushed her way through her dancing guests to reach me. "What's wrong? Has labour started?" Honestly. My family has no idea about contemporary urban steet dance trends."