pantsing

Pantsing, also known as depantsing, debagging, dacking, flagging, sharking, and scanting, is the act of pulling down a person's trousers and sometimes underpants, usually against their wishes, and typically as a practical joke or a form of bullying, but in other instances as a sexual fetish.
Pantsing is a more common prank and occurs mainly in schools. Some U.S. colleges before World War II were the scenes of large-scale "depantsing" scraps between freshman and sophomore males, often involving more than 2,000 participants. It is also an initiation rite in fraternities and seminaries. It was cited in 1971 by Gail Sheehy as a form of assault against grade school girls, which did not commonly get reported, although it might include improper touching and indecent exposure by the perpetrators. The United States legal system has prosecuted it as a form of sexual harassment of children.

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