In the birth scene of Juno, the titular character yells, "Thundercats are go!", which is obviously a mashup of the "Thundercats, ho!" and "Thunderbirds are go!" declarations from the Thundercats cartoon and the unrelated Thunderbirds marionette show, respectively.
Was this a deliberate mashup by the writer, a production mishap, or a misread from actress Ellen Page? Was this incorrect phase used intentionally, possibly reflecting a confused state of mind, or completely unintentionally?
Ultimately, was it supposed to be the inaccurate phrase "Thundercats are go!", or one of the two correct phrases? Did someone "get it wrong" unintentionally or deliberately?