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.
[1][2] 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.
[5] 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.
In New Zealand the act is known as giving someone a down-trou (though this can have a more specific meaning, relating to loser-shaming in pool playing and other competitive games); in Ireland, it is jocking, zoonking or ka-blinking; in the north and south-west of England kegging (or quegging).
[11] An alternative term is sharking,[12] which usually implies a sexual assault on a stranger rather than a prank or bullying between peers, and is sometimes applied more broadly to the pulling down of blouses and other top clothing.