The Swirlie is a prank in which one's head is dunked into the toilet bowl and flushed. It was rather prevalent in the 90's, and is little more than a dare game nowadays. In the United Kingdom, this prank is called the "Bogwash," or in certain parts of Australia, the "Dunnyflush." It is primarliy used as a dare during parties or laughs between friends, though there are occurences in which it has been used as a hazing tool, as such, this makes the Swirly the most situational of all pranks. If done improperly or with bad intent, (such as hazing) there can be dire consequences, legal or otherwise.