The image depicts "thumb wrestling " or "thumb war". A thumb war (pea-knuckle or pea-knuckle war in New Zealand) is a game played by two players in a tournament called a thumb-a-war (or thumb war) using the thumbs to simulate fighting. (from wikipedia "thumb war") I used an OCAL clipart called "Thumbs Up Silhouette" uploaded by "GDJ". Thanks. The thumb wrestling is called "yubi-zumou" or "???" in Japanese. a "yubi" means a finger. "zumou" is a dervative from a word "sumou".
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thumb wrestling free icon was designed by yamachem for icons Png and presented to its users.
yamachem
2/5/2018