By Rumple Oxbridge (The Pacific’s purely imaginary in-house rhymer)

Photo by FEMEN Women’s Movement (http://www.flickr.com/photos/femen/4516588146/) [CC BY-SA 2.0 (http://creativecommons.org/licenses/by-sa/2.0)%5D, via Wikimedia Commons

To get it off their chests
some women bare their breasts.
But looking so arresting
can get them arrested
because it’s men they’re breasting.

[A verb form of breast means to oppose or fight against. Thus the final (and title) pun.]–JK