Ok im 13 and a boy how come ppl think your gay just because you wear a earring in your left ear?

i mean like how boys wear earrings if you know what im saying ..!! ????? ppl act like they never seen straight guys wear a earring before and it makes me mad. so what im saying is , is that can u still wear a earring even if your not gay i mena i want to bad and i do but ppl say stuff and im about ready to just smack them in the dam head