WARNING: men may be embarrassed reading this post.
A couple of days ago I am with my family at a restaurant. I take my 4 year old into the restroom with me and make her come into the stall since there are other people in the bathroom and I dont want anyone to "steal" her. She uses the toilet first and I decided I needed to go too. I happened to be wearing those "period" underwear (do all women have these?) and she notices the stain and says very loudly "Mom, you have a stain in your underwear. I think next time you do the laundry you need to use stain remover on that." I hear muffled laughing coming from the next stall and I'm sure that lady is picturing skid marks or something.
Oh the unfiltered honesty of children.