When your child has a birthday party and you send their friends home with a party bag or small gift, you will occasionally get a message from a parent thanking you for your generosity.
That was not this mum's experience - instead she had a fellow parent accuse her of 'enforcing gender norms' with her gift for young guests.
Posting to Reddit, the mum explained that she had decided to purchase some "cute lunchbox sets" for her six-year-old's birthday party, after finding the bargain items on sale.
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"Instead of having plates of food set out and the kids grabbing stuff, I thought it'd be fun if each kid got a lunchbox filled with food and juice in the bottle, and they could take the box/bottle home," she wrote in her post.
The options available were Frozen-themed lunchboxes, which she intended to give to the girls, and Spiderman-themed lunchboxes, which she intended to give to the boys.
"The day came, all the kids had a blast and when it was time for lunch I gave them the lunch sets.
"I did grab a couple extras in case the kids wanted the other lunchbox (so if a girl wanted spider man, vice versa) but no one said anything and they all seemed over the moon with it," she adds.
But the lunchboxes became an issue when one of the mums arrived to pick up their child.
"She went on to say that I was 'enforcing gender norms on impressionable young children' and 'stuck in the 1900s'," the mum recalls.
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"At this point, I was a bit baffled and said that it was not my intention at all, and if her daughter wanted the Spiderman set I would be more than happy to give it to her since I had extras," she adds.
"She said that's not the point and I shouldn't have been giving out things based on gender in the first place."
The mum has appealed online to ask if she really was in the wrong, but most seem to be on her side.
"You even bought extra to accommodate a boy who wanted Frozen or a girl who wanted Spiderman, so I don't get where you are "enforcing" anything," wrote one user.
"I'm a mum of two and would have no issue at all with this and think you had a really cute idea," they added.
"I mean obviously, you should have just given them all plain grey lunchboxes to represent the void of future reason, but what can ya do..." another person joked.
Another person agreed that the mum hadn't done anything wrong, but did point out that pop culture has had an impact on members of the LGBTQIA+ community.
"The heteronormativity of media (along with society in general) absolutely did contribute to innumerable LGBT people either not realising that they could have same-gender attraction, or assuming it was 'wrong', and ending up coming out in their 20s, 30s, or even later," they wrote.