Winner of the impromptu impersonation section at the North Australian Rock Eisteddfod on Magnetic Island was this aspiring actor who posed as a whistling shag on a rock . Judges were so impressed by his performance they tipped he could be the next Mel Gibson and play a hopping mad Highlander in Braveheart ll . A disgruntled competitor said the wallaby only won because he has body odour, is disparagingly called B.O. Plenty , and is shunned by the rest of the wallaby colony , so that he looks like a silly goose on a rock 24/7.