I am a boy and I want to wear sleevesless clothes what should I do?

My name is Chris and I am 15 years old chubby white boy, from my childhood I never wore sleevesless clothes but I want to wear it now, I tried n wore it one day but a man was staring me in a weird way when I asked him the reason he laughed seeing my armpits even though my armpits wer shaved

hmm listen , I think u can wear whatever u want, and if somebody doesn't like it , llet them burn in fucking hell, it's not their buisness:)
and u should have ur own strong confident personality!
Good Luck !