The talent of a good story-teller. Comes from the sound a jaw makes when hitting the ground after an incredible story has been told. One usually acquires ghomp through the excessive use of swag.
There is a cookie jar from 1999 that is made out of plastic and is in the shape of a lion. When you open the lion's mouth he says, "GET YOUR HAND OUT OF MY COOKIE JAR RAHHH"
There are now memes of the funny-looking lion with this acronym in the picture.
Short for "Get yo hand outta my cookie jar" Which references a phrase that a Talking Lion Cookie Jar said. Nostalgic for some people due to it being found in their grandparent's home.
person 1: dude I just bought that lion cookie jar person 2: gyhomcj 💔💔