So, Other People's Kids will do something like...
Be free reader around 8 or 9. But all of MN kids are fluent readers at 5.
OPKs can swim 10m around 7/8 .. MNs? Well they did that at 4 and are now swimming 2k at 7/8
Oh your kid managed to add 8+2 in their head at 6? Well the MN child could do this at 3.
I think a lot of people are lying.