There's a crazy guy at work who since I started has basically been bugging me quite a lot, he often behaves stupidly around me and seems to single me out.
On my very first day he yelled at me 'Will you go out with me?'
Obviously I ignored him because I'd never even seen him before, let alone spoke to him. Since then whenever its me and him alone at work he has been making rude and sexual comments to me about my friends, sometimes he makes a really loud noise with or without equipment at work to try and make me jump, especially when I'm studying.
I told him I wasn't interested because he was too short and he stripped half naked and started dancing around the staff room spraying someone's asthma medication all over themselves. He is extremely annoying and whilst I don't mind a bit of fun, I think he's going a bit far, what should I do?