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A "Google Mum" is a non-technical affine girl or woman, which hasn't any computer skills but is capable of using "Google".
She: "Hey, where do i get an antivirus software from"

Male1: "Why don't you just google it!"

Male1 to Male 2: "'Damn her, she isn't even a Google Mum"
by Ltd_Dan82 May 25, 2012