I'm sure this wouldn't happen to anybody else (no. Really.....I'm pretty sure). I asked DH to clean/empty skimmers before I set out to vacuum pool. One skimmer had a nearly empty sock in the basket that previously had been full of CYA. DH "though" he didn't want to stain concrete with CYA sock so he promptly put the sock in the skimmer while he emptied the basket. I was upstairs on the porch when I heard "what the (insert expletive) where did the sock go!!!!" What a panick I was in when I realized what he had done. since I no very little about plumbing.
Well......all is well. To my pleasant surprise just like when your child eats that coin this too passed. Lesson learned. Keep socks and DH away from skimmers just as you keep toddlers away from small objects.