タマキン

noun

balls; testicles

Slang term formed by reversing the syllables of 金玉 (きんたま). Used in very casual, often vulgar contexts.

See also: 金玉 (きんたま)

• あいつ、サッカーボールがタマキンに当あたって悶もん絶ぜつしてたよ。

  That guy was writhing in agony after the soccer ball hit him in the balls.