So I have a co-worker who's okay about 80% of the time but sometimes we will work with beautiful women and then he goes full retard, trying to play AMOG and shit-testing me when it never happens in normal scenarios. I'm a calm and confident guy so I easily deal with him but the reason I'm asking TRP is because he will never stop trying. We are both students and see each other during weekends at work and every weekend the same shit happens, he falls into the same predictable AMOG behavior trying to impress girls and shit-testing me again.

What I wanna know is, how can I become more offensive? I want to shut him up, say a little something that will make him look like a fool so he won't try again. I had the same problem at my previous workplace. Some wannabe AMOG, it's always the tryhard kind, he kept trying to shit-test me and it made him angry because he never got any reaction from me. He always saw me as "competition", he was an idiot but charismatic, used to befriend everybody. His world shattered when I didn't want to talk/hang with him. He didn't understand why somebody didn't enjoy his colorful personality so that's why he always tried to poke at me whenever possible.

So, how do I shut down AMOGs instead of being passive and dealing with shit tests all the time?