I overheard this when I was out walking the dog at the weekend:
"Which I needed like Helen Keller needed an iPad".
I really wish I'd stopped the guy, asked him what he was referring to, and congratulated him on his facility with similes.
I'd probably have remonstrated with him for his gross insensivity about the problems of blind people.
[Edited at 2014-02-26 07:50 GMT]