That's a shitty reason. Don't excuse his behavior as though it was his age that caused him to be a gigantic asshole. He acted badly and had peers who provided

That's a shitty reason. Don't excuse his behavior as though it was his age that caused him to be a gigantic asshole. He acted badly and had peers who provided feedback that supported his behavior. 18 years olds are empowered to make decisions on whether to shoot children carrying a rifles. This guy and his friend couldn't decide if calling a coworker a whore qualified as work appropriate.