the activity or an act of violently knocking into someone's chest, especially in sport

In Australian Rules football, a deliberate front-on collision is known as shirtfronting. 在澳式足球中，故意的正面碰撞被称为当胸撞击。

Most football codes have outlawed violent forms of tackling or bodily contact, such as shirtfronting. 大多数足球法规都禁止暴力形式的抢断或身体接触，例如当胸撞击。

the activity of behaving in a threatening way to someone

She uses her feminine charm to diffuse potential testosterone-fuelled shirtfronting. 她用自己的女性魅力来化解男性之间的潜在冲突。

She accused me of shirtfronting. 她指责我威胁她。