There are some variations of this song floating around lyrically Ive always used this 
personally:

[G]
   Bang, bang, Lulu;
[D]            [G]
   Lulu's gone a way
                [C]
   Lulu had to go bang bang
       [D]           [G]
   thats why she ran a way

Verse:
[G]
   Lulu had a boyfriend,
[D]             [G]
   name was Tommy Tucker.

   took her round to his
           [C]
   House, to see if he could...

Chorus:
[G]
   Bang, bang, Lulu;
[D]            [G]
   Lulu's gone a way
                [C]
   Lulu had to go bang bang
       [D]           [G]
   thats why she ran a way

verse:
[G]
   Lulu had a baby,
[D]               [G]
   named him Jungle Jim.
                  [C]
   Put him in the basin,
    [D]             [G]
   to see if he could swim.

   He swam to the bottom,
[D]               [G]
   came back to the top.
            [C]
   Lulu got excited,
[D]               [G]
   and grabbed him by his...

Chorus:
[G]
   Cocktail, ginger ale,
[D]            [G]
   five cents a glass.
              [C]
   If you don't like it,
[D]            [G]
   you can throw it up your...

verse:
[G]
   Ask me no more questions,
[D]                    [G]
   I'll tell you no more lies.

   Ask me that again,
                        [C]
   and I'll spit right in your...

Verse:
[G]
   Ikey and Spikey,
[D]                    [G]
   laying in the ditch

   Ikey called Spikey,
                [C]
   a dirty son of a...

Chorus:
[G]
   Bang, bang, Lulu;
[D]            [G]
   Lulu's gone a way
                [C]
   Lulu had to go bang bang
       [D]           [G]  [Am] [G]
   thats why she ran a way

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