Just to confirm, `kids'` is correct for plural posession. If you want to be really pedantic and overanalyse it, there are three possible situations. `kids'` if

Just to confirm, `kids'` is correct for plural posession. If you want to be really pedantic and overanalyse it, there are three possible situations. `kids'` if you assume the parents have multiple kids, and `kid's` if they have one. However, if you assume that "your" refers to all the parents on the internet collectively, then `kids'` is correct again. Since `kids'` is correct in 2 out of 3 scenarios, that's what I would go for.