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