Granny's Sock Share definition Flag A condom that is so low-performing, you will think that your Grandma knitted it for you. John made Jill pregnant last night. He shouldn't have been wearing Granny's Sock. Granny's Sock by TEH ONLINE GRANNY August 6, 2012 0 0 Get merch Get the Granny's Sock mug. Buy Now — $32.95 See more merch