Explain this to me. Please.

My girls have about 28-30 pairs of socks amongst the three of them. [Say this in your best David Letterman voice] Here in my left hand I hold . . . TWENTY single socks. Yes, twenty. If my girls would find the other twenty singles, they would have a boatload of socks instead of scratching to find any to wear, let alone ones that sort of go with what they are wearing.

I don't tend to lose little things like that, so it's hard for me to understand. Ahem, unless it is a set of knitting needles and a ball of cotton yarn
still in the JoAnn bag that I bought so my friend could teach me to knit and I have no idea what happened to it.