#does anyone mind explaining the joke?

natequarter : The Doctor invites a man on board the TARDIS. The Doctor says, &ldquo;So, what would you like to see first? The Skaro Museum? 1990s Scotland? Ooh! I know! We could go see Pagliacci!&rdquo; Man says, &ldquo;But Doctor,&rdquo; #does anyone mind explaining the joke? the meme i&rsquo;m referencing goes something like this: &ldquo;Heard joke once: Man goes to doctor. Says he&rsquo;s…