When a friend or acquaintance receives a haircut that exposes the back of their neck, a common practice is to utter the phrase "I like ya cut G" and slap the back of their neck as hard as humanly possible.
Retaliation is to be expected
"Ohh you playin Minecraft, I like ya cut G" *smacks the shit out of little kid playing minecraft*
This is a meme that was created by a video showing a man saying the words:
"Oh you playin' minecraft? I like ya cut, G." before proceeding to slap a bald child on the back of the head.
This is often used as a phrase before slapping a person (often someone that recently had a haircut) on the back of the head.
Source: youtube.com/watch?v=2TA6rSkPMPA
Person 1: "Hey man! Look at my new cut!"
Person 2 proceeds to walk behind Person 1.
Person 2: "I like ya cut G."
Person 2 proceeds to slap person 1 on the back of the head.