Wanting to paint my nails but nervous?

Hey guys and girls, I'm doing a bit of 'exploring' myself and I'm wanting to paint my nails a very glittery shade of blue and even do my toes but.. I'm kinda nervous that family will say something to me like "oh your a guy you can't paint your nails"... Advice please would be nice.

Wanting to paint my nails but nervous?
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