well I'm relieved there's not a resounding "left ear means gay" or "right ear means gay" lol. I have told girltwin that she can have hers pierced if she wishes when she is 5, so I'm not about to have one rule for boys and another for girls. Ear piercings are allowed in their primary school and we won't be sending them to private school so I don't need to consider that. DS1 rides dirtbikes and shuns ball games so I doubt injury will be an issue either

Thanks for the input. If he still wants it done I will tell him to pick an ear, or both if that's what he wants, and I will take him somewhere reputable to have it done.