From the source:

Well, things seem to be looking up for Rooney. As it turned out, friendly neighborhood manta ray Nathan was in the area and happened upon his shorts, which poor Rooney lost in his rather spectacular wipe-out.

For the events leading up to this point, have yourself a click! http://www.furaffinity.net/view/3636102/

Nathan and Rooney belong to diarmaidhutchence. Image by yours truly.