Just that really. Went out to a farm park yesterday on my own with my three year old son and the loos available were male, female and disabled. I wasn't about to use the disabled loo and in any case someone was using it, so I did what I always do and took DS into the ladies, at which point I got a filthy glance from another woman and she said "he should be using the men's".
I was so taken aback I didn't even reply but the more I think about it the more I think how ridiculous this was. I am entirely supportive of female-only spaces but we are talking about a three year old child (who by the way does not look older than he is). He genuinely doesn't even have any concept of sex yet, he calls everyone "she". He's not old enough to take himself into the men's on his own.
Surely I was not BU?!?!