According to the Honolulu Star-Bulletin,[1] prevailing local lore credits the gesture to Hamana Kalili of Laie,[2] who lost the three middle fingers of his right hand while working at the Kahuku Sugar Mill.
[3] Kalili was then shifted to guarding the sugar train, and his all-clear wave of thumb and pinkie is said to have evolved into the shaka as children imitated the gesture.
[4][5][6][7][8] Another theory relates the origin of the shaka to the Spanish immigrants, who folded their middle fingers and took their thumbs to their lips as a friendly gesture to represent sharing a drink with the natives they met in Hawaii.
[18] The last, similar to the first except that it represents the thumb extended horizontally (as if perpendicular to the wrist) is reported, together with the first form, from Brigham Young University in 2016.
It is referred to as "schooies" in Australia (Australian slang for a schooner)[20][21] With the thumb held near the ear and the little finger pointed at the mouth, the gesture is commonly understood to mimic the handset of a traditional landline telephone, and depending on context can be understood to stand for "call me", "I'll call you", or "let's talk on the phone".
It is also used as a nod of respect to Hamana Kalili, a native Hawaiian Latter-day Saint who, according to locals, is the founder of the popular sign.