Sep sep sep-dom dom dom

One miserable morning, a very spontaneous conversation begun...

...
Shok: come lets play “Sep sep sep-dom dom dom”
Aster: what??
Shok: u know, “sep sep sep-dom dom dom”? (trying to show the funny action)
Aster: whats that... “sie sie sie-bom bom bom” is it?
Shok: wat “sie sie sie-bom bom bom”, its “Sep sep sep-dom dom dom” lahh...
Aster: not “Sep sep sep-dom dom dom” leh, its “sie sie sie-bom bom bom” lahh...
Shok: ya meh, u sure or not...
Aster: (laugh) Pei Lyn, which one is right?
Lyn: me ah... I say “sie sie sie-bom bom bom” lo...
Shok: wat?? Ok, may be thats the Chinese version.
Aster: Han Sing, how do you say it?
Hansing: erm... “ Sep sep sep- bom bom bom” lo..
Aster: wah.. what version is that???
Lyn: ok, now we can make sure the back part is “bom bom bom”
Shok: (pai seh) ok lahh... I'm from Malay school ma...
Alvin: eh (pops out from no where), i'm from Malay school also wat.
Shok: then which version r u using?
Alvin: “sie sie sie-bom bom bom” lah...
Shok: O.o”
(everyone turn back to their computer and continue working.)

-.-||| so which one is the original slogan? Sep sep sep-dom dom dom, sie sie sie-bom bom bom or Sep sep sep- bom bom bom???