Macuarro - A Mexican insult for someone who builds things but can't spe

A Mexican insult for someone who builds things but can't spell their own name and screams at the boss like a mad dog.

'That Macuarro thinks he's the boss now? He can't even tie his own boots!'

'The Macuarro kicked a brick and now the whole site is in chaos.'

'I told him to shut up, but that Macuarro just yelled louder.'