Cactus Jack was the maniacal daredevil of late-eighties WCW, but he took his most famous taunt from the new wave rock group The B-52s and their famous hit Love Shack. Towards the end of the song, the phrase Bang, bang, bang, on the door baby is repeated. It came into his head one match, he just let it flow for the camera, and stuck from there. The finger gun action was there right from the start, and became an iconic part of the Cactus Jack character. Its important for Foley to have signifiers for which character hes playing. If you see the knee wiggle its Dude Love, if you see one arm raised its Mankind, and if you see him flash two finger guns, then its unmistakably Cactus Jack.