Although I am full-grown (and perhaps still growing a bit in the wrong places) and appear - on first glance - to be a reasonable sort of adult, internally (despite having two kids of my own) I am still the gawky awkward 13 year old that everyone loved to hate. Some people, after a certain age, turn 39 every year. I was born 13 (it may seem impossible, but I was a moody, awkward, and inappropriate baby - somehow I just pooped at the worst possible time) and expect to stay 13 well into my 80s (when no doubt I will continue to poop at the wrong time.)
Yet women who look a great deal like they should by my mom's friends - that is women I am inclined to be deferential towards - come to me and ask my thoughts on things at playgrounds, ice cream shops, dog runs and other places people with children congregate. They ask my thoughts on area schools, entertainment activities, and products for children.
I answer politely (while wondering how they can possibly take my thoughts on anything seriously). Then they walk away nodding thoughtfully and I think, "I sure fooled them, they must have thought I was an adult - maybe I could get away with buying beer..."
Oddly, an alarming number of these moms have facial tattoos and tongue studs. None of my mom's friends had these accessories.