As I shifted in my moulded plastic seat, my thighs sticky with sweat I noticed that the accouterments collecting around the other parents feet - lunch boxes, water bottles, spare shoes, unnecessary cardigans, reading books - were almost universally pink and sparkly. Fairies, unicorns and unfeasibly cute kittens were strong motifs.
As the mother of four boys, this should be a strange environment for me to find myself in. But I felt right at home. We were waiting to watch my middle son take part in a musical that he had spent the previous week rehearsing at a holiday drama scheme. As the other participants trooped onto the stage the reason for the sea of pink glitter became evident. He was one of just four boys - but that's just normal in my household.
My eldest and my youngest have both learned ballet and in every class they were the only boys standing, pirouetting or arabesqueing. For the two years that my eldest took ballet classes I was a mother alone holding a navy blue coat or chatting about superheroes as we waited for the class to start.
I was the only mother who had to soothe tears because their child was not allowed to wear a beautiful pink skirt to dance in, but instead was relegated to boring black leggings, the only mother who had to explain gently why my boy had to dance with a flag, rather than the much more appealing glittery pom poms the girls got to wave around.
It's been tough being the mother of boys, but not in the way that most people would imagine it to be. I have never washed muddy rugby kit, I have never shivered beside a football pitch, or even had to endure one on the TV, I don't have to deal with wrestling on the floor or with cuts and bruises from playground scraps.
It's not easy being blue
Instead I have to buoy up confidence that it's OK to be different, that just because you are the only boy who loves pink and dolls, that's just fine. If you would rather read a book than kick a ball around it will probably be the best life choice you can make (that is unless you have the skills of a budding premier league player - see I don't even know an appropriate name to slot in here).
The number of times I have been jokingly told that with four boys we almost have enough for a five-a-side football team, only to quietly think to myself that I am more likely to end up with a corps de ballet.
It's not that my children don't show any male traits - they are messy, loud and addicted to computer games - it's just that they just don't fit any of those other obvious boy stereotypes.
Not that it matters to me, as I watch typical boys struggle and fail in comparison to girls when it comes to exams and career success, I am wholeheartedly glad that my sons are much closer to the female of the species. At my eldest's end of term prize giving ceremony once again he stood out as one of very few boys who was honoured with an award. But I couldn't have been prouder to have brought up a boy who swims against the crowd. All those lunch hours spent happily buried in a book are really beginning to pay off.
While I am all for girls being allowed to do just what they want, to play with trucks and become front line soldiers, perhaps the parents of boys should be equally keen to break down gender stereotypes, if only to ensure their sons don't get left behind playing footie in the park, while the girls scoop up all the prizes.