The story
See hey and Joe as in G.I. Joe or average Joe. As part of leftover street slang speech from WW2 times to call out to random American G.I.s (soldiers) in the Philippines.
Etymology from Wiktionary, CC BY-SA 4.0.
hey Joe
Today it means: An expression to catch the attention of a white male Caucasian foreigner in the Philippines, especially white male Americans and historically American soldiers in the Philippines during WW2 Full definition →