The recent topless motorbike prank reminded me this prank would have been pointless in Canada.

http://www.flava.co.nz/spy/hamilton-boys-high-student-retaliate-after-topless-motorbike-prank-disaster/

"Chaos at two Hamilton high schools is continuing to ensue after an end-of-year prank resulted in serious injuries to one student.

Waikato Diocesan School for Girls has fallen victim to retaliation today after six of its students drove topless on dirt bikes through the grounds of Hamilton Boys' High School on Wednesday."

https://en.wikipedia.org/wiki/Topfreedom_in_Canada

"Topfreedom in Canada has largely been an attempt to combat the interpretation of indecency laws that considered a woman's breasts to be indecent, and therefore their exhibition in public an offence."

"In Canada, ... what constitutes an indecent act is not defined, and is open to interpretation by the courts.

In 1991, toplessness as an indecent act was challenged in Guelph, Ontario, by Gwen Jacob, who removed her shirt and was charged with indecency. Part of her defense was the double standards between men and women.

Although she was convicted, this was overturned by the Court of Appeal. This case determined that being topless is not indecent within the meaning of the Criminal Code. However, it did not establish any constitutional right of equality.

This case subsequently led to the acquittal of women in British Columbia and Saskatchewan who faced similar charges.

Although each Province and Territory technically reserves its right to interpret the law as it pleases, the Ontario case has proved influential. Since the matter has not been determined by the Supreme Court of Canada, it is still possible that a woman could be convicted elsewhere in Canada, but interpretation of moral law in Canada has become increasingly liberalised.

There do not appear to have been any further women charged in Canada since these cases were decided."