Okay, so the song is really simple to learn and the song and reprise are almost the same.

Verses:
        AMichael (x02220@1)Rennie was ill
            GThe (320003@1)Day the Earth Stood Still
        C (x32010@1)             EBut (022100@1)he told us where we stand.
          AAnd (x02220@1)Flash Gordon was there
          GIn (320003@1)silver underwear,
       C (x32010@1)                     EClaude (022100@1)Rains was the Invisible Man.
     AThen (x02220@1)something went wrong
         GFor (320003@1)Fay Wray and King Kong.
          C (x32010@1)                       EThey (022100@1)got caught in a celluloid jam.
           AThen (x02220@1)at a deadly pace
             GIt (320003@1)Came From...Outer Space.
    C (x32010@1)                          EAnd (022100@1)this is how the message ran

Chorus:
D (xx0232@1)       E (022100@1)     G (320003@1)              C (x32010@1)  Science fiction, double feature
D (xx0232@1)       E (022100@1)      G (320003@1)             C (x32010@1)  Doctor X will build a creature.
D (xx0232@1)              E (022100@1)    G (320003@1)        C (x32010@1)  See androids fighting Brad and Janet
D (xx0232@1)            E (022100@1)     G (320003@1)       C (x32010@1)Anne Francis stars in Forbidden Planet
            DWoah (xx0232@1)oh oh oh oh
                             E (022100@1)            GAt (320003@1)the late night, double feature, picture show



And you just repeat that ^_^
Also, for the reprise, replace all the Cs with Fs