I think the reference is her practicing how to speak in the previous extra, the other one that comes to mind is when she was eating the school lunch where she also said 'delish'.
@welcome2atlantis Think about it in a different way, we'll go with the popular GoT; 'Daenerys Stormborn' the Stormborn part is literally because she was born during a storm, I know shocker right? Or maybe his parents wanted their child to be strong like 'Storm Thunder', or we could go at...