When I use it my classmate called me "GAY".

I study at weekday, and the classrooms is all in air-con. So some days my lip will become very dry, because of the air-con. So, I decided brought a lipstick to prevent my lip dry. I tried to brought a color with gloss and shine lipstick, for the appearance. But, the 1st I using it, a lot of classmate asking me "You wear lipstick?" with weird. And ask me why I wear it. Anythings wronged I wear it?
Haiz...

This the lipstick...