South African opposition leader Helen Zille said she has been bitten by a rat outside her home in Cape Town. \"The weirdest thing just happened. I went to fetch the newspapers at the gate when a rat darted out, and bit me on my toe!\" the head of the Democratic Alliance, the main opposition group, said on Twitter. She posted a photograph of her bloody toe after Tuesday\'s incident. When a reader asked why she did not blame the ruling African National Congress for the incident, she replied: \"Damn, why didn\'t I think of that!!\" But she lost her sense of humour when someone asked if the rat was black or white, in a country where race remains a delicate issue nearly 19 years after the end of apartheid. \"Only in SA!! Just a matter of time b4 someone brought race into it,\" she wrote.