And Clark Kent wouldn't be able to idly stroll into (or even break into*) the TARDIS to change into Superman either. These are just jokes. :)
Speaking of which... polite fire!
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*Even if he could, the amount of time/effort he would have to expend wouldn't make it worth while - might as well find another phone box. ;)
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P.S.: Elmer Fudd's solution to duckface! <rofl>