Wester

A lariken and (or) buffoon/clown who acts in a way that is damaging to their self-esteem or reputation. These types of people will often dig themselves into deep holes whilst in casual conversation

Look at him, he's being such a wester.
dude did you see how chad last night? Yeah bro dude was being a mad wester aye
My mans was westing up so i had to cut him loose