To have been beaten without mercy into a state of retardation.
The 'Mong' part is derived from Mongoloid or Mongolism and refers to general retardation and the second part comes from the verb 'Fong' meaning to beat mercilessly.
"The police officer on the motorbike swerved to avoid a pedestrian who stepped onto the road, he then struck the side of a bus before cascading into a lamppost causing a severe and permanant brain injury."
A Mongologanger is The word mongoloid crossed with the word doppelganger. Making mongologanger. Its the retarded versions of people. Its your look alike if you were deformed and or retarded.
Hey that girl looks just like your ex heather! Yeah she does except the uglier version of her. Yeah its her monologanger.
A lightstick for the fandom of a South Korean boy group called Monsta x.
This lightstick has two versions, which are both gorgeous.
According to fans of many kpop fandoms, this lightstick is one of the most good looking ones.
Person 1: What's that thing you keep waving around at those concerts?
Person 2 : Oh, this is my mondoongie!
Person 1: Your what?
Person 2: It's monsta x's official lightstick.