Colour blind people can't distinguish between red and green
Hence, they would not be able to see what the sign says.
(
T.A.F.K.A. doctorsax http://www.badphorm.co.uk,
Sun 2 Mar 2008, 13:22,
archived)
I like to think she was being clever
and saying 'ris' because all she saw was one giant green square :D
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Pavlov'sDog is all out of pavlova,
Sun 2 Mar 2008, 13:25,
archived)