Muggy little cunt is a descriptive term which refers to somebody who you believe to have spoken to you or acted in an innappropriate way towards you (this is implied through the word 'muggy'). using the word 'little' implies they are in fact inferior to you and the word 'cunt' is used in order to enforce maximum disrespect for said person. when put together 'muggy little cunt' makes the individual it is aimed at feel extremely insignificant and small in stature
who do you think you are you "muggy little cunt"?...speak out of term again and I'll rip that excuse for a head off that weasely body of yours, is that clear sunshine?
A goat faced bastard is a term used to describe someone who you would consider to be a friend who's actions have been innappropriate. It is commonly used as a form of disrespect when your friend has done something which you would consider to be morally and socially below their normally acceptable standards.
I can't believe you took that swamp donkey back last night you goat faced bastard